Gomu Gomu no Mi

The Gomu Gomu no Mi, is a Paramecia type Devil Fruit that turns the user's body into rubber. "Gomu" means rubber in Japanese. In the Viz Manga and 4Kids and FUNimation dubs, it is called the Gum-Gum Fruit. It was originally a treasure that Shanks and his crew took from an unspecified enemy but was accidentally eaten by Monkey D. Luffy. In the second version of Romance Dawn, it originally belonged to Luffy's grandpa who took it from an unspecified enemy.

Appearance
The Gomu Gomu no Mi is a violet Yubari Melon shaped fruit with swirls. While its final design has the characteristic Devil Fruit swirls all over it, the fruit was initially drawn without them in the first version of Romance Dawn.

Strengths and Weaknesses
The fruit's major strength, as demonstrated by Luffy, is that the person can stretch their body like rubber at will, and makes them almost entirely immune to blunt attacks, including bullets or even cannonballs. The user's ability to stretch and twist like rubber to extreme lengths not only makes them immune to injuries that originate from such, but it also allows them moves that can give them a great advantage in battle or otherwise. Stretching also allows the user to drastically increase the range of what would otherwise be a powerful close-range attack, turning it into a devastating mid-range attack. A stretched limb can also be used to store potential energy like a stretched spring, increasing the power of an attack. Owing to rubber's insulating properties, the user is also immune to electrical attacks.

By training his Gomu Gomu abilities, Luffy has found unexpected ways to increase his fighting ability, such as the ability to stretch his blood vessels wider to increase the speed of his blood flow in order to become faster and stronger, at a cost of depleting his body's energy at a faster rate. Luffy can even inflate his bones to increase the volume of his body and power up his attacks, at a cost of his body becoming smaller for a short period of time.

Despite all the advantages Luffy gets by using his fruit, he can however still be hurt by cutting or stabbing attacks, as well as non-physical attacks such as fire or ice. One major risk of Luffy's powers is that he is vulnerable to attacks in the moments when his limbs are stretched to their limit, as Buggy and Kuro both demonstrated early on in the series. Luffy, however, has adapted his fighting style to minimize this risk such as when Buggy attempted to exploit this weakness of Luffy. Luffy, of course, also suffers the same weaknesses to water and Seastone as all other Devil Fruit users. However, he appears to forget about his weakness to water, as he always wants to try some type of sport in the sea and will dive into the ocean when he sees someone drowning (only to end up drowning himself).

Usage
The powers of the fruit have been used by Luffy in a variety of ways. These range from simply moving from one place to another in rather reckless manner, to attacking an enemy with a barrage of punches.

Attacks
Luffy notably uses the Gomu Gomu no Mi to attack. His attacks all follow a pattern. They begin with "Gomu Gomu no..." and finish with an attack-specific word. The majority of them are named after guns and various other firearms. This naming pattern originates from the claim that Luffy made to Shanks that his fist is as strong as pistol fire. Other known attacks were named after various other aspects such as physical objects to mental stupidity. In the Viz manga, all of Luffy's Devil Fruit based attacks begin with Gum-Gum instead of Gomu Gomu. In the 4Kids dub, Luffy's attacks also begin with Gum-Gum. However, the gun references are completely renamed for censorship reasons. In the FUNimation dub, the gun references are kept in.

Gun and Artillery Themed Attacks
The known normal Devil Fruit based attacks so far that are named after guns and various other artillery, that Luffy has used, are as follows:


 * Gomu Gomu no Pistol (ゴムゴムの銃 [ピストル], Rubber Rubber Pistol): Luffy's standard straight punch, augmented with stretching. This attack can be used from short to long range. In the Viz Manga and FUNimation dub, it is called Gum-Gum Pistol. In the 4Kids dub, it is called Gum-Gum Blast. Its name comes from Luffy's claim to Shanks that his punching arm is "As powerful as a pistol!" This was first seen being used on the Lord of the Coast after ten years of training in the manga, while in the anime, it is first seen being used against Alvida. In the second version of Romance Dawn, Luffy used a technique similar in concept to this attack against Spiel. According to a fan poll, this is the ninth favorite attack amongst fans with a total of 552 votes.


 * Gomu Gomu no Rocket (ゴムゴムのロケット, Rubber Rubber Rocket): Luffy's main method of traveling long distances fast. He stretches out one of his arms or both and grabs a handhold, then retracts them, projecting himself high into the air, over great distances, or even into an opponent. This technique is oftentimes reckless especially if not done properly as Luffy could accidentally propel himself into a body of water or worse. This was first seen being used to propel Luffy to the top of the Marine Base in Shell Town in the manga. In the anime, it was first seen being used to crash into Alvida's crew. A humorous usage of this "attack" was accidentally against Ace and Smoker in a Restaurant, who are both Logia Users but didn't have the reflex to dodge the Rocket. This is called Gum-Gum Rocket in the Viz Manga and 4Kids and FUNimation dubs.


 * Gomu Gomu no Bazooka (ゴムゴムのバズーカ, Rubber Rubber Bazooka): Luffy stretches both his arms far back, and then hurls them forward, striking his opponent with both simultaneously. This is usually used as a finishing move. This was first seen being used to defeat Buggy. In the Viz Manga and FUNimation dub, this is called Gum-Gum Bazooka. In the 4Kids dub, this is called Gum-Gum Double Barrel. According to a fan poll, this is the fifth favorite attack amongst fans with a total of 995 votes.


 * Gomu Gomu no Gatling (ゴムゴムの銃乱打 [ガトリング], Rubber Rubber Gatling): Luffy uses his stretching ability to bring his fists forward repeatedly in a blurry, rapid barrage of punches that creates the illusion of him having multiple arms, however he doesn't actually grow more arms so his arms can be caught by an opponent fast enough (as Enel and Rob Lucci demonstrated). This was first seen being used against a group of Black Cat Pirates after being accidentally hypnotized stronger by Jango. This is called Gum-Gum Gatling Gun in the Viz Manga, Gum-Gum Gatling in the FUNimation dub (and sometimes the Viz Manga), and Gum-Gum Rapid Fire in the 4Kids dub. According to a fan poll, this is the favorite attack amongst fans with a total of 3785 votes.


 * Gomu Gomu no Bullet (ゴムゴムの銃弾 [ブレット], Rubber Rubber Bullet): Luffy stretches one arm far behind him, then snaps it back to deliver an short-distance, one-fisted blow to an opponent. This was first seen being used on Don Krieg. In the Viz Manga and FUNimation dub, this is called Gum-Gum Bullet, while in the 4Kids dub, this is called Gum-Gum Burst. According to a fan poll, this is the twenty eighth favorite attack amongst fans with a total of 68 votes. In all instances in the anime except the fight against Usopp and in the fight against Blueno, this attack is always renamed "Gomu Gomu no Pistol".


 * Gomu Gomu no Bow Gun (ゴムゴムのボーガン, Rubber Rubber Bow Gun): Luffy takes hold of his opponent, then repeatedly twists his torso vertically around his waist. The resulting snapback sends his opponent flying upwards. This was first seen being used against Wapol. In the Viz Manga and FUNimation dub, this is called Gum-Gum Bowgun. In the 4Kids dub, this is called Gum-Gum Crossbow.


 * Gomu Gomu no Shotgun (ゴムゴムの銃 [ピストル] ｢散弾 [ショット]｣, Rubber Rubber Shotgun): Starts off as an ordinary Pistol attack, after which Luffy "twangs" his stretched arm, causing his fist to connect multiple times. The kanji can be read as "Pistol Shot" but it is pronounced as "Shotgun" in the anime. In the Viz Manga, this is called Gum-Gum Pistol Shotgun, while in the 4Kids dub, it is called Gum-Gum Quake. This was first seen being used against Crocodile after Luffy wet his own body with water.


 * Gomu Gomu no Rifle (ゴムゴムの回転弾 [ライフル], Rubber Rubber Rifle): Similar to Gomu Gomu no Bullet, but Luffy twists his arm around as he stretches it behind him and hits the opponent at close range, putting a spin on them. This attack is called Gum-Gum Rifle in the Viz Manga and FUNimation dub and Gum-Gum Drill in One Piece Grand Adventure. This was first seen being used against Enel. According to a fan poll, this is the twenty first favorite amongst fans with a total of 85 votes.


 * Gomu Gomu no Cannon (ゴムゴムの攻城砲 [キャノン], Rubber Rubber Cannon): Luffy builds up speed with a long series of quick punches, and finishes with a single double-fisted blow. A powerful technique that can pierce strong armor, and, in combination with Zoro's Three-Swords Style, devastating enough to puncture a hole through a massive tidal wave. This was first seen being used against one of the Franky Family's "Mighty Destroyers". In the video game One Piece Grand Adventure, this is called Gum-Gum Cannon.

Other Weapons Themed Attacks
The known normal Devil Fruit based attacks so far that are named after other weapons other than guns, that Luffy has used, are as follows:


 * Gomu Gomu no Muchi (ゴムゴムの鞭, Rubber Rubber Whip): Luffy stretches his leg and kicks in a wide circle, striking multiple foes. This was first seen being used against a group of Marines in Shell Town. This is called Gum-Gum Whip in the Viz Manga and 4Kids and FUNimation dubs.


 * Gomu Gomu no Tsuchi (ゴムゴムの槌, Rubber Rubber Mallet): Luffy takes hold of his opponent with his hands, then spins, twisting his arms. He then untwists them, rapidly spinning his opponent, while bringing him crashing to the floor. This was first seen being used against Richie after he and Mohji destroyed Chou-Chou's master's store. In the Viz Manga, this is called Gum-Gum Gavel. In the 4Kids and FUNimation dubs, this is called Gum-Gum Hammer.


 * Gomu Gomu no Kama (ゴムゴムの鎌, Rubber Rubber Scythe): Luffy grabs an object behind his opponent and pulls himself towards them. He then stretches out his other arm and clotheslines his opponent. This was first seen being used against Buggy. In the Viz Manga and FUNimation dub, this is called Gum-Gum Sickle. In the 4Kids dub, this is called Gum-Gum Fist.


 * Gomu Gomu no Yari (ゴムゴムの槍, Rubber Rubber Spear): Luffy holds his feet together and kicks with both simultaneously. This was first seen being used against Kuro after Luffy dodged his attack. This is called Gum-Gum Spear in the Viz Manga and 4Kids and FUNimation dubs.


 * Gomu Gomu no Ōgama (ゴムゴムの大鎌, Rubber Rubber Big Scythe): Identical to Gomu Gomu no Kama, but he uses both arms for the rocket and the clotheslining. This was first seen being used on a group of Krieg's pirates that were attacking the Baratie. This is called Gum-Gum Giant Scythe in the Viz Manga and 4Kids and FUNimation dubs.


 * Gomu Gomu no Ono (ゴムゴムの戦斧, Rubber Rubber Axe) Luffy stretches one leg high into the air, then brings it crashing down on an opponent or structure, for massive damage, strong enough to destroy large buildings and ships in a single hit. This was first seen being used on the front porch of the Baratie. In the Viz Manga and FUNimation dub, this is called Gum-Gum Battle Axe. In the 4Kids dub, this is called Gum-Gum Axe.


 * Gomu Gomu no Ōzuchi (ゴムゴムの大槌, Rubber Rubber Big Mallet): Similar to Gomu Gomu Mallet, but he performs it using the feet and legs instead of hands and arms while in mid-air. He performed while he was trapped inside Krieg's net, sending the latter crashing into Baratie's front porch. This is called Gum-Gum Giant Gavel in the Viz Manga and Gum-Gum Giant Hammer in the 4Kids and FUNimation dubs.

Other Concepts Themed Attacks
The known normal Devil Fruit based attacks so far that are named after other concepts other than weapons, that Luffy has used, are as follows:


 * Gomu Gomu no Fuusen (ゴムゴムの風船, Rubber Rubber Balloon): A technique wherein Luffy inflates himself rapidly through his mouth, further increasing his resistance to blunt attacks. With his inflated body, Luffy is capable of deflecting projectile attacks back to their shooters. This is not necessarily always an attack as Luffy can also use this technique for other purposes aside from deflecting projectiles such as escaping Smoker's Smoke Snake technique or using himself as a cushion when his ship is in for a hard landing. This can also prevent Luffy from sinking under water, making him bounce off the surface. This was first seen being used against one of Buggy's cannonballs after Luffy insulted Buggy. This is called Gum-Gum Balloon in the Viz Manga and 4Kids and FUNimation dubs. According to a fan poll, this is the seventeenth favorite attack amongst fans with a total of 162 votes.


 * Gomu Gomu no Kane (ゴムゴムの鐘, Rubber Rubber Bell): While grappled onto an enemy, Luffy stretches his neck backwards, then snaps it back for a devastating head butt to the opponent's face. This was first seen being used to defeat Kuro. This is called Gum-Gum Bell in the Viz Manga and 4Kids and FUNimation dubs.


 * Gomu Gomu no Kazaguruma (ゴムゴムの風車, Rubber Rubber Windmill): A technique that was used once in the Arlong Arc. Luffy planted his feet into the ground to steady himself, then twisted his body around tightly. He then grabbed hold of Arlong's pet Mohmoo and unwound, spinning the Sea King around rapidly to crush the Fishmen surrounding him. After spinning around several times, Luffy then let go of Mohmoo and threw him far away. While it took out most of Arlong's Fishmen, it however had the disadvantage of getting Luffy's feet stuck in the ground. This rather reckless move was inspired by the sight of the pinwheel on top of Genzo's hat by Luffy. "Kazaguruma" can be translated as either "windmill" or "pinwheel". In the Viz Manga, this is called Gum-Gum Windmill while in the 4Kids and FUNimation dubs, this is called Gum-Gum Pinwheel. In the video game One Piece Grand Battle, an alternate version of this move exists where instead of planting his feet firmly to the ground, Luffy just proceeds to the target(s) while twisting his mid-section before unwinding, slapping anyone unfortunate enough to be within proximity


 * Gomu Gomu no Tate (ゴムゴムの盾, Rubber Rubber Shield): Luffy grabs the fingers of one hand with the other, and stretches them before his face to block blades that pass between the fingers. This was first seen being used on Arlong. This is called Gum-Gum Shield in the Viz Manga and 4Kids and FUNimation dubs.


 * Gomu Gomu no Ami (ゴムゴムの網, Rubber Rubber Net): Luffy entwines his fingers making a net like shape and then stretches out his fingers making a larger net in an attempt to trap his opponents. This was first seen being used on Arlong. This is called Gum-Gum Finger Net in the Viz Manga and 4Kids and FUNimation dubs.


 * Gomu Gomu no Ikebana (ゴムゴムの生け花, Rubber Rubber Flower Arrangement): A technique in which Luffy grabs hold of the Going Merry's mast and slams it into his opponent. This was first seen being used on Laboon. The name is derived from the fact that the way the mast is slammed resembles typical Japanese flower arrangements. In the 4Kids dub, this technique is not present. This is called Gum-Gum Bouquet in the Viz Manga and Gum-Gum Flower Arrangement in the FUNimation dub.


 * Gomu Gomu no Stamp (ゴムゴムのスタンプ, Rubber Rubber Stamp): Luffy stretches his leg out and hits his opponent with the bottom of his foot, leaving an imprint, or "stamp", of his sandal. This was first seen being used to finish off Mr. 3. In the Viz Manga, and FUNimation dub this is called Gum-Gum Stamp.
 * Gomu Gomu no Stamp Gatling (ゴムゴムのスタンプ 銃乱打 [ガトリング], Rubber Rubber Stamp Gatling) Similar to Gomu Gomu no Stamp, except he makes multiple strikes with his foot. This was first seen used at Marineford to crush a mast frozen by Aokiji.


 * Gomu Gomu no Dame Da! (ゴムゴムのダメだ, Rubber Rubber No Way!): A joke technique in which Luffy stretches his arm to stop Usopp stealing his water given to him by Toto. In the Viz Manga and FUNimation dub, this is called Gum-Gum No Way!. The 4Kids dub also calls it Gum-Gum Keep Away!. In the anime it was used again in Rainbow mist filler arc. According to a fan poll, this is the twenty fourth favorite attack amongst fans with a total of 76 votes.


 * Gomu Gomu no Sensuikan (ゴムゴムの潜水艦, Rubber Rubber Submarine): Similar to the Pistol, but his fist travels underground to uppercut the target. In the 4Kids and FUNimation dub, this is called Gum-Gum Submarine.


 * Gomu Gomu no Baku Baku (ゴムゴムのバクバク, Rubber Rubber Chomp Chomp): Luffy stretches his mouth wide open, and attempts to bite or swallow his opponent. This attack was named after and copied from Wapol's Baku Baku no Mi powers. In the Viz Manga, FUNimation and 4Kids dub, this is called Gum-Gum Munch-Munch. This technique was first seen being used against Crocodile.


 * Gomu Gomu no Marunokogiri (ゴムゴムの丸鋸, Rubber Rubber Buzzsaw): Luffy grabs his opponent from afar with both arms and winds himself up like with Bow gun. He then kicks off from the ground and spins towards his opponent to deliver a powerful head butt. In the Viz Manga and 4Kids dub, this is called Gum-Gum Buzzsaw. This was first seen being used against Crocodile after Luffy wet his own body with water.


 * Gomu Gomu no Storm (ゴムゴムの暴風雨 [ストーム], Rubber Rubber Storm): An extremely powerful move and is easily one of Luffy's strongest attacks. With an opponent positioned high above, Luffy first uses Gomu Gomu no Balloon and twist his body around tightly, then blow the air towards the ground. This propels Luffy spinning upwards towards an opponent up above, where he delivers a constant barrage of powerful punches, with power greatly enhanced by the momentum of his launch. This was first seen being used to defeat Crocodile. This attack was powerful enough to beat Crocodile through an extremely thick ceiling of solid bedrock and cause a huge earthquake in Arabasta, and then propel him several hundred feet into the air. This technique can also be used while Luffy is airborne, allowing him to literally rain punches down upon his enemies. In the Viz Manga and 4Kids and FUNimation dubs, this is called Gum-Gum Storm. According to a fan poll, this is the seventh favorite attack amongst fans with a total of 815 votes. In the video game One Piece: Unlimited Adventure, an alternate version of this move is seen where Luffy first twists himself right before inflating, making the move quicker and faster.


 * Gomu Gomu no Hanabi (ゴムゴムの花火, Rubber Rubber Fireworks): Luffy jumps into the air and spins around rapidly. Then he unleashes a flurry of punches and kicks that go in every direction due to the spinning motion. This was first seen being used against the White Berets in Skypiea. In the Viz Manga, the English version of Pirates Carnival (dubbed by 4Kids) and the FUNimation dub, this is called Gum-Gum Fireworks.


 * Gomu Gomu no Boh... (ゴムゴムのボー, Rubber Rubber Idio...): A technique in which Luffy 'switches off' his conscious mind, allowing him to avoid attacks entirely on instinct. This made him immune to Enel's mind-reading Mantra ability. The disadvantage is that he can neither think nor attack in this state. According to a fan poll, this is the twentieth most favorite attack amongst fans with a total of 95 votes. This is called Gum-Gum Space-Out in the Viz Manga and Gum-Gum Airhead... in the FUNimation dub.


 * Gomu Gomu no Tako (ゴムゴムのたこ, Rubber Rubber Octopus): A technique in which Luffy makes his appendages go limp that they resemble the tentacles of an octopus. This was done in an attempt to figure a way to fight against Enel's Mantra ability. This is called Gum-Gum Octopus in the Viz Manga and FUNimation dub.


 * Gomu Gomu no Tako Hanabi (ゴムゴムのたこ花火, Rubber Rubber Octopus Fireworks): Much like Gomu Gomu no Hanabi except, due to the previous move, Gomu Gomu no Tako, his limbs bounce off of walls without losing speed. Because his limbs are limp, Luffy can't predict or control where they will go if they ricochet off of an object, much less the unlucky opponent(s). This is completely advantageous against a Mantra ability user as they also can't predict where Luffy's punches and kicks would come at them. This technique was used against Enel during Luffy's battle against him. In the Viz Manga, this is called Gum-Gum Octopus Fireworks.


 * Gomu Gomu no Mikata Robo (ゴムゴムの味方ロボ, Rubber Rubber Ally Robot): Luffy wraps his arms around a person's limbs in order to manipulate their movements. This was first used against a Marine in Enies Lobby.
 * Mikata Robo Punch (味方ロボパンチ, Ally Robot Punch): Luffy uses his "Ally Robot" to punch an opponent.
 * Mikata Robo Kick (味方ロボキック, Ally Robot Kick): Luffy uses his "Ally Robot" to kick an opponent.


 * Gomu Gomu no Kazan (ゴムゴムの火山 [かざん], Rubber Rubber Volcano): Similar to Gomu Gomu no Ono, except Luffy's foot is stretched upwards to break through a roof. This was first seen being used against marines at Enies Lobby.


 * Gomu Gomu no Ame (ゴムゴムの雨, Rubber Rubber Rain): Luffy jumps into the air and performs a rapid fire punching attack while spinning. Similar to Storm, except without inflating himself beforehand, and he punches while descending like rain. This was first seen being used on gaolers of Impel Down.


 * Gomu Gomu no Migawari (ゴムゴムの身代り, Rubber Rubber Scapegoat): Luffy avoids getting hurt from his opponent by grabbing someone else around him and use them as a human shield. This was first seen used against Juracule Mihawk' s Kokutou Yoru, with Buggy as the shield. Buggy isn't harmed due to his Devil Fruit ability, but it doesn't make him any happier about it. The Gear Second version of this attack was first seen before this normal version made its debut.

Anime Uses
In the anime, Luffy displays some more unique uses of his rubbery body. The known named regular Devil Fruit techniques that are exclusive to the anime are as follows:


 * Gomu Gomu no Pachinko (ゴムゴムのパチンコ, Rubber Rubber Slingshot): Luffy grabs hand and foot holds, then intercepts a projectile, stretching back and firing the projectile back at its origin. This was first seen being used against the cannonball that Fullbody fired at Luffy; whereas in the manga, Luffy bounced it back with a Gomu Gomu no Fuusen. This is called Gum-Gum Slingshot in the 4Kids and FUNimation dubs. In the FUNimation dub of the Warship Island arc, it is called Gum-Gum Pinball.


 * Gomu Gomu no Neji (ゴムゴムのネジ, Rubber Rubber Screw): Luffy grabs onto a large, spinning object that is shot at him while holding onto a foothold, twists his arms and legs as if to do a Gomu Gomu no Giant Gavel while the force of the object propels him further to his ability's limit, then slams the object into a foe while spinning. This was first seen being used against Bear King in the second One Piece movie.


 * Gomu Gomu no Amidori (ゴムゴムの網取, Rubber Rubber Net-Catch): A technique wherein Luffy stretches his arm out to catch something. In the FUNimation dub, this is called Gum-Gum Grab. This was first seen being used to catch what Luffy assumed to be fish. Instead of catching fish however, Luffy caught an unconscious Apis adrift on her boat. The recoil of this technique is somewhat reckless as Luffy's arm pushed Zoro off the Going Merry as Luffy reeled it back in.


 * Gomu Gomu no Tsuribashi (ゴムゴムの吊橋, Rubber Rubber Suspension Bridge): A technique wherein Luffy turns himself into a make-shift bridge by laying his rubber body across a gap. In the FUNimation dub, this technique is called Gum-Gum Suspension Bridge. This was first seen being used to help Nami get across a wide gap in Warship Island.


 * Gomu Gomu no Nagenawa (ゴムゴムの投げ縄, Rubber Rubber Lasso): A technique wherein Luffy entwines himself around something, and then stretches his arm to grab an object. In the FUNimation dub, this is called Gum-Gum Lasso. This was first seen being used when the Going Merry was going through a typhoon to get to the Lost Island. Luffy entwined his body to the ship's mast and stretched out his arm to lasso Ryuji's raft.


 * Gomu Gomu no Propeller (ゴムゴムのプロペラ, Rubber Rubber Propeller): Used against a giant sea bird in the anime, Luffy jumps into the air and does a Gomu Gomu no Gavel, with his hands grabbing the bird's beak to prevent it from attacking him, spinning the bird around in a cyclone before slamming down onto Going Merry's deck. In the 4Kids dub, this is called Gum-Gum Twister and in the FUNimation dub it is called Gum-Gum Propeller.


 * Gomu Gomu no Zenmai (ゴムゴムのゼンマイ,Rubber Rubber Spring): Similar to Gomu Gomu no Rocket, however he wraps his arm around a round object multiple times, making it very firm, he then spins around the object then suddenly getting shot very far and high in the direction Luffy wants. This was first been seen trying to get out of the ruins, Zoro and Chopper fell down and Luffy who climbed down.


 * Gomu Gomu no Hittakuri (ゴムゴムのひったくり, Rubber Rubber Grapple): Similar to Gomu Gomu no Rocket, except Luffy wraps the outstretched arm several times around the target before rocketing towards it. This was first seen being used to get onto Barbarbossa's ship in one of the Arabasta anime filler episodes.


 * Gomu Gomu no Sadowari (ゴムゴムの砂土割り (さどわり), Rubber Rubber Sand Splitter): While fighting on sandy terrain, Luffy outstretches his arm and skims the surface of the sand to uppercut the opponent from afar. This was first seen being used against Zoro in an Arabasta filler episode because Luffy went delusional from drinking cactus juice and thought that he was Crocodile.


 * Gomu Gomu no Shoot (ゴムゴムのシュート, Rubber Rubber Shoot): Used in Pirate Soccer King featurette. Luffy stretches back leg and kicks.


 * Gomu Gomu no Tomotsuna (ゴムゴムの艫綱 (ともつな), Rubber Rubber Stern Rope) Luffy used this to make a way from his ship to another ship. He stretches his arm far to catch the Marine ship and retracts it, just like Gomu Gomu no Rocket. This was first seen being used when he carried Sanji and Taijiyo come back to Marine ship in Post-Arabasta Arc


 * Gomu Gomu no Bungee (ゴムゴムのバンジー, Rubber Rubber Bungee): When holding onto a ledge while stretched, Luffy retracts his arm to pull him up while hopping along the wall. This was first seen being used in Nami's filler episode in the Post-Arabasta arc to get back onto the Going Merry after Luffy accidentally fell off.


 * Gomu Gomu no Tomozuna (ゴムゴムの艫綱, Rubber Rubber Ship to Ship Line): Luffy stretches both of his arms between the ship he is on and the one he wants to go to. By jumping off the ground, he is able to pull himself and passengers to the ship that he is holding onto. This was first seen being used in Sanji's filler episode in the Post-Arabasta arc to get on and off a marine ship.


 * Gomu Gomu no Warp (ゴムゴムのワープ, Rubber Rubber Warp): A sort of joke move used in the Rainbow Mist. Since the phenomenon creates a wormhole-like effect, Luffy attempts to "rocket" out of it only to end up exactly where he started.


 * Gomu Gomu no Home Run (ゴムゴムのホームラン, Rubber Rubber Home Run): Used in Pirate Baseball King featurette. Luffy first hits a baseball with his fist. Next, he twists his body around with Gomu Gomu no Pinwheel. Luffy finally unwinds his body making the ball fly out of his fist and making a home run.


 * Gomu Gomu no Yo-Yo (ゴムゴムのヨーヨー, Rubber Rubber Yo-Yo): With a gold ball attached to his arm, Luffy holds onto an object and uses the ball to stretch himself so far that when he snaps back he is sent flying into the sky. A variation of this is used with Gomu Gomu no Fuusen during the Enies Lobby saga as Luffy uses it to escape the Marines by jumping down from a build in while still holding on the bouncing back up. This is known as Gum-Gum Yo-Yo in the Funimation dub.


 * Gomu Gomu no Koma (ゴムゴムの独楽, Rubber Rubber Top): Luffy wraps an outstretched arm several times around a target, then pulls his arm away suddenly, causing the target to spin out of control. This was first seen being used against Foxy's Gorilla Puncher #13 in an anime filler episode.


 * Gomu Gomu no Jutte (ゴムゴムの十手, Rubber Rubber Jutte): While wielding a jutte, Luffy uses Gomu Gomu no Gatling. Used in the fourth one-hour special, against the Buggy family and later Hachi. This is also a pun that can mean "ten-hands" as well as referring the weapon used. Hachi comments on this as being "outnumbered" compared to his six swords style. In the FUNimation subs, this is called Gum-Gum Billy Club.


 * Gomu Gomu no Senjukannon (ゴムゴムの千手観音, Rubber Rubber Senjukannon): An alternate version of Gomu Gomu no Gatling with the name being a pun on Gomu Gomu no Cannon. Senjukannon is a thousand-armed goddess of mercy. Used in the fourth one-hour special.


 * Gomu Gomu no Gomu Douryoku (ゴムゴムのゴム動力, Rubber Rubber Rubber Powered): Luffy twists his arms around each other as if to do Gomu Gomu no Tsuchi, then grabs onto a propeller and spins his arms, increasing the power of the propeller. The move greatly exhausts him, however, probably because it requires him to submerge his arms in water, triggering his Devil Fruit weakness. This was first seen being used in the seventh movie, although the concept was seen during the anime version of the Donut Race in the Dave Back Fight arc.


 * Gomu Gomu no Twin Pistol (ゴムゴムのツインピストル, Rubber Rubber Twin Pistol): Basically Luffy's normal Pistol attack, only with both of his arms instead. This was first seen used against Kanpachino and Brindo.


 * Gomu Gomu no 100,000 Degree Bazooka (ゴムゴムの100,000ダグレーバズーカ, Rubber Rubber 100,000 Degree Bazooka): Basically a regular Gomu Gomu no Bazooka technique that was used by Luffy against Don Achino. The technique differs little from a regular Bazooka technique, however at the moment of impact, Luffy continued applying force to the attack despite his hands being burned by the powers of Don Achino's Devil Fruit, the Atsu Atsu no Mi. As a result, Luffy was able practically use Achino's own Devil Fruit powers against him by allowing the heat being accumulated into his arms as he maintains contact with the Don's body to build-up. Thus allowing Luffy to send Achino flying away into his house, Lovely Land.


 * Gomu Gomu no Haragi (ゴムゴムのハラギ, Rubber Rubber Belly Dance): Luffy uses Gomu Gomu no Fuusen and draws a face on his expanded belly and moves it while he dances. In the manga, this move was not named. In the FUNimation subs, this technique is called Gum-Gum Belly Talk. This joke technique was used in the Kuja's dinner celebration.

Forms
Throughout the series, Luffy is often faced with opponents that require unusual methods to defeat. For this reason, he sometimes adopts certain "forms" intended to enable him to defeat those enemies. However, some of these forms are simply cosmetic and don't involve his Devil Fruit powers in any way, such as Afro Luffy, giving him no real physical advantages whatsoever. The most revolutionary and useful of these forms so far are the "Gear" forms, as described in the section below.

The named forms that Luffy has so far used are as follows:

Mizu Luffy
In the fight with Crocodile, the leader of Baroque Works, Luffy used a barrel filled with water, in order to weaken Crocodile and make him vulnerable by disabling his ability to use his sand-morphing ability. With this Luffy could coat his appendages with water and use water-supported attacks against Crocodile along with a plan to soak Crocodile completely with water. However upon realizing the barrel and it's contents were in too much danger from Crocodile's attacks, Luffy later drains the entire barrel of water, becoming Mizu Luffy (水ルフィ, lit. Water Luffy). Though at first glance the form looks idiotic and somewhat flawed as he had trouble keeping the water down (to the point of causing even Nico Robin to burst out laughing), it allowed Luffy to safely store the water and spit it out at Crocodile for use. Luffy stayed in this form until he was completely dried up by Crocodile.


 * Mizu Mizu no Pistol (水水の銃(ピストル), Water Water Pistol): By drinking a barrel of water and becoming "Mizu Luffy", Luffy pumps water into his mouth with his arms before he spits spheres of water at his opponent. This was first seen being used against Crocodile. Aside from Luffy's regular Devil Fruit techniques enhanced by water while in this form, this the only named attack used by Luffy unique to this form. In the Viz Manga, this is called Water-Water Pistol.

Afro Luffy
During the Davy Back Fight arc, Luffy had to face Foxy the Silver Fox in the final event, Combat. Beforehand, he got to choose what he would wear for the fight. Usopp, who was with him, spotted a big black afro, and had Luffy wear it. Thus, Afro Luffy (アフロルフィ, Afuro Rufi) was born.

Usopp claims that the afro gives Luffy extra power. While donning the afro, Luffy also donned boxing shorts, boxing gloves, some type of straps on his feet, and had a temporary tattoo of a flaming skull and cross-bones on his chest. While wearing the afro, Luffy also tends to say things such as "Hell yeah!". Although only Nami and possibly Zoro think that it doesn't help anything, the others say "Because of the afro..." is how he gets more powerful (but they might be joking or just playing along).

Although this form only appears once in the original manga, Afro Luffy returns again in a filler episode. When Foxy tries to get his ship and crew back, he is forced to ask for Luffy's help. When doing so, he hands over the afro he had before, and Luffy uses it to fight.

The known Devil Fruit attacks that Luffy uses in this form are as follows:


 * Gomu Hook (ゴムフック, Rubber Hook): Luffy launches an elongated hook, which can hit the enemy’s back due to his stretching ability. In the Viz Manga and the video game One Piece Grand Adventure (dubbed by 4Kids), this move is called Gum Hook.


 * Gomu Gomu no Flail (ゴムゴムの連接鎚矛(フレイル), Rubber Rubber Flail): Luffy swings one arm in a circle at high speed, then drives his fist into his opponent. In the Viz Manga and One Piece Grand Adventure, this is called Gum-Gum Flail.

Gear Second
Gear Second (ギア2（セカンド）, Gia 2 (Sekando)) is a form that was first seen in Luffy's fight against Blueno. Luffy pumps his blood rapidly with his legs to kick start the process which in turn increases the speed of his blood flow, thus providing more oxygen and nutrients to various parts of his body which makes him faster and stronger. It uses even more oxygen and energy, hence using up more food and he has to breathe harder. This causes him to be hungrier or lying on the floor after a long usage of it, like the fight with Rob Lucci. Lucci, one of the first of Luffy's opponents to witness it, compares the process to taking a stimulant. In Luffy's case, all of his organs are made up of rubber, so they can expand and contract, allowing the blood to move at the increased speed without stressing any internal organ, such as the blood vessels and the heart, without causing it to explode. This mode's enhancements to Luffy's physiology gives him the ability to use a new set of attacks which are generally the same as his old ones but are so fast that even a skilled assassin would have a hard time actually seeing them. This is called Gear Two in the Viz Manga and Second Gear in the FUNimation subs.

This form also enables Luffy access to his own version of the Rokushiki technique, Soru, which would make sense since he used Soru's principle, which is to kick the ground multiple times to propel the user over to a desired distance at imperceivable speeds, as the basis of Gear Second by incorporating it with his Gomu Gomu No Mi powers. In other words, Luffy practically uses his elastic body by compressing it and using it as the kick-off point when initiating Gear Second. As a result, he can not only utilize a much more refined form of Soru that is far superior to other Soru users, but the power of his attacks are also greatly enhanced by the high speed that they seem to break the sound barrier, generating sonic boom-like effects in the process. In this form his metabolism rate is so high that his sweat vaporizes rapidly giving rise to a steaming appearance, and his skin turns slightly pink from the increased blood flow. He also says almost all of his attacks in English as opposed to Japanese. Luffy also tends to take a certain pose right after activating Gear 2nd with one hand making a fist and touching the ground in front of him and the other one touching his knee, possibly to maintain the increased blood flow until the process has stabilized.

At first Luffy can only use Gear Second for a short period of time, because the accelerated speed at which nutrients are used up depletes his stores rapidly. The mechanics behind this enhancement thus also mean reduced strength and ability after significant amounts of usage, as pointed out by Lucci when Luffy's attacks start losing their speedy edge because with all his nutrients running low, having a faster blood flow would be useless as there are no nutrients to use. Due to this, as also pointed out by Rob Lucci, Gear second hacks away Luffy's life force dramatically, increasing a chance of having a much shorter life because he is starving his body, though Luffy rebutles, saying that it doesn't mater as long he saves his nakama. After Gear Second wears off, Luffy can recover quickly through replenishing of his nutrient storage by eating meat. Recently, Luffy has demonstrated more excessive use of his Gear second ability throughout the cause of the Impel Down arc without such exhausting costs like his fight with Rob Lucci, as well as being able to activate it at conveniently brief periods to save his stamina and strength reserves for more lasting durations. This is possibly because of Luffy's mastery over the form along with his desire to save Ace.

While not considered canon, in the 7th movie of the series which takes place before the Water 7 arc, Luffy briefly and unknowingly activated Gear second during his fight against Ratchet, the antagonist of the film, when the sheer pressure of the machine Luffy is forced to hold up unknowingly causes his legs to end up pumping his blood flow.

The known named techniques that are used by Luffy so far in this form are as follows:
 * Gomu Gomu no Jet Pistol (ゴムゴムのJET銃[ピストル], Rubber Rubber Jet Pistol): Luffy delivers a Gomu Gomu no Pistol so fast that the fist's movement is invisible, and it truly seems like he shoots his opponent, except that the resulting impact is not akin to an actual pistol, but to a small hand-held cannon and powerful enough to propel the unlucky recepient several meters away. The incredible speed both makes the strike more powerful, and harder to dodge. This was first seen being used against Blueno.


 * Gomu Gomu no Jet Rifle (ゴムゴムのＪＥＴ回転弾, Rubber Rubber Jet Rifle): A Gear Second technique that first appeared in the anime. Luffy delivers a very fast Gomu Gomu no Rifle. The winding of the original Rifle along with its snapback happening almost at the same time as Luffy speeds towards the target makes this move impossible to evade. This was first seen in the anime being used against Blueno.


 * Gomu Gomu no Jet Stamp (ゴムゴムのＪＥＴスタンプ, Rubber Rubber Jet Stamp): Luffy delivers a Gomu Gomu no Stamp, with the same effect as the Jet Pistol. This was first seen being used against Blueno.


 * Gomu Gomu no Jet Yari (ゴムゴムのＪＥＴ槍, Rubber Rubber Jet Spear) or Gomu Gomu no Jet Lance(ゴムゴムのＪＥＴランス, Rubber Rubber Jet Lance): A Gear Second technique that first appeared in the anime. Luffy delivers a very fast Gomu Gomu no Yari that seems to connect instantly with his opponent. This was first seen in the anime being used against Blueno.


 * Gomu Gomu no Jet Missile (ゴムゴムのＪＥＴミサイル, Rubber Rubber Jet Missle): A Gear Second technique that first appeared in the anime. Luffy stretches and grabs onto an enemy's body. Then, he very quickly retracts, crashing into the foe. This was first seen in the anime being used against Blueno.


 * Gomu Gomu no Jet Bazooka (ゴムゴムのＪＥＴバズーカ, Rubber Rubber Jet Bazooka): Luffy charges at his opponent at high speed, and delivers a very fast and very strong Gomu Gomu no Bazooka. In the Viz Manga and FUNimation subs, this is called Gum-Gum Jet Bazooka. This was first seen being used against Blueno. It was apparently powerful enough to break through Blueno's strongest Tekkai technique. During the battle against Moria in his Shadows Asgard form, Luffy demonstrated being able to use this move to propel himself from mid-air, allowing him to perform this attack continously.


 * Gomu Gomu no Jet Axe (ゴムゴムのＪＥＴ斧, Rubber Rubber Jet Axe): A Gear Second technique that first appeared in the anime. Luffy stretches his leg vertically and then crashes it down on his opponent, unlike the usual version however, rather than merely smashing his foot into the enemy the speed at which it is done is so quick that rather than attacking the area directly in front of him, his Jet axe strikes several metres in length thus increasing its range. This was first seen in the anime being used against Lucci.


 * Gomu Gomu no Jet Whip (ゴムゴムのＪＥＴ鞭[ウィップ], Rubber Rubber Jet Whip): Luffy delivers a Gomu Gomu no Muchi, so fast, that only the slipstream is visible. This was first seen being used against Rob Lucci in order to protect Franky from him.


 * Gomu Gomu no Jet Bullet (ゴムゴムのＪＥＴ銃弾[ブレット], Rubber Rubber Jet Bullet): An extremely fast close range punch. When attacking head-on, the stretching of the original Bullet along with the resulting snapback seem to occur almost simultaneously at once, making it virtually inescapable. This was first seen being used against Rob Lucci.


 * Gomu Gomu no Twin Jet Pistol (ゴムゴムのツインＪＥＴ銃[ピストル], Rubber Rubber Twin Jet Pistol): Luffy punches with both arms simultaneously. Visually, the move only differs from his bazooka in that instead of doing an open palm strike, he has clenched fists which leave two knuckle shaped imprints on his foe. As since the move hit so fast, the air from it really looks like Luffy firing two pistols. This was first seen being used against Rob Lucci and is one of the few moves unique to Gear second (unless the anime-only regular "Gomu Gomu no Twin Pistol" is included). In the Viz Manga, this is called Gum-Gum Twin Jet Pistol.


 * Gomu Gomu no Jet Gatling (ゴムゴムのＪＥＴ銃乱打(ガトリング), Rubber Rubber Jet Gatling): This is one of Luffy's strongest techniques. Luffy stands still, and moves his arms so fast that they become invisible, covering the enemy with punches (each with the force equal to a Jet Pistol) in a mere split second. This results in an effect comparable to Foxy's Kyuubi Rush, except that Luffy doesn't need to make use of Noro Noro photons to slow down his target in order to accumulate the hits. The hits land so fast that, after a volley, they seemingly connect simultaneously, while a circle of airbursts from the punches surround Luffy. The circle resembles the many barrels of a real gatling gun. However due to the large amounts of energy it uses, Luffy can not sustain it for long, although the time it is used is considerably longer than the regular gatling. During his fight against the combined efforts of Marigold and Sandersonia, Luffy demonstrated an omni-directional version of this move by falling on his back, then, while lying down, launches a rapid barrage of high-speed punches from the ground, effectively nullifying both sister's attacks.


 * Gomu Gomu no Jet Rocket (ゴムゴムのＪＥＴロケット, Rubber Rubber Jet Rocket): A Gear Second version of Luffy's Gomu Gomu no Rocket technique. After grabbing onto something with stretched out arms, Luffy instantly propels himself forward with blinding speed. This was first seen being used against Moria.


 * Gomu Gomu no Jet Cannon (ゴムゴムのＪＥＴ攻城砲 (キャノン), Rubber Rubber Jet Cannon): A Gear Second version of Luffy's Gomu Gomu no Cannon. It was not seen as a single attack but it was seen fused with Zoro's and Sanji's techniques in a combination attack. The time Luffy launches his punches in order to "charge" the attack seems to be shorter and the impact, obviously, is higher in this form. This attack form part of the Santouryuu Gomu Gomu no Diable Jet Mutton 600 Pound Cannon. It was first seen against Pacifista PX-4, a replica of Barthlomew Kuma.


 * Gomu Gomu no Jet Migawari (ゴムゴムのＪＥＴ身代り), Rubber Rubber Jet Substitute): Somewhat of a gag move where Luffy stretches his arms to grab a person (an ally, an opponent, or otherwise an simple bystander) from afar then pulls them close to where he is to block an attack that Luffy would otherwise be incapable of surviving on his own. Using his Gear Second speed, Luffy can capture himself a shield very quickly. He has a normal (non Gear Second) variant of this move where Luffy sends the recipient spinning towards the assaulter to preoccupy them as he makes his escape. This was first seen being used by Luffy on Buggy, using the latter as a human shield against Mihawk.

Gear Third
Gear Third (ギア3（サード）, Gia 3 (Saado)) is a form that is first hinted at the climax of the fight between Luffy and Blueno, and first used to knock down a steel door in Enies Lobby. It was first fully seen in Luffy's fight against Lucci. Luffy corks his mouth with his thumb, bites into his thumb joint and blows very hard into it, which inflates his arm. He is then able to transfer the air through his entire body, requiring the torso to act as an interface for his various limbs. Luffy blows so much air into his body that when they're all focused on a single limb, they become the size equivalent to (or greater then) that of a giant's. Used with his already-strong physiology, this apparently gives his arm more mass and a larger area to attack with, but he sacrifices mobility for this strength as his limbs are now so large that Luffy has extreme trouble moving unless in his Fuusen form. This is called Gear Three in the Viz Manga and Third Gear in the FUNimation subs.

Gear Third is generally used when raw physical strength is needed, the bones are the key difference between this form and his old "Gomu Gomu no Fuusen" move, where his balloon form was soft and squishy like a regular balloon, whereas the inflated bones are very hard, similar to an inflated car tire. Unlike the normal Gomu Gomu no Fuusen technique, bullets ricochet off of Gear Third instead of bounce off. The bones being much harder also mean a lot of compression of air takes place when using Gear Third, making Gear Third not just a 'for-show' move as Lucci initially thought, but like a giant mace of astounding mass when used in attacks. In between his attacks, Luffy brings the air back to his chest and then shifts it into another body part. The downside is, the lag time in which it takes Luffy to transfer and re-channel the amount of air trapped inside his bones through his very being can be disadvantageous. Furthermore, it is quite difficult for Luffy to move while part of his anatomy has been converted to gigantic proportions, making the Gear inadvisable to use against opponents capable of moving at high speeds (like Lucci) or in an enclosed place as he is leaving himself vulnerable to attack, which is why since his battle against Rob Lucci, Luffy tends to only activate Gear Third against massive and often slow-moving targets whom he likes to assault with his Gear Third moves coming from high above in mid-air, where the said attacks could not be obstructed. To deactivate Gear Third, Luffy leaves the form by exhaling heavily, which can cause him to be propelled backwards.

The deactivation of Gear Third brings about shrinking, which is a negative side-effect due to the massive expansion undergone prior to release. The amount of time Luffy spends in his shrunken form is roughly equivalent to the amount of time spent in Gear Third mode. This shrunken form has shown little to no ability to stretch at all, and it has been shown that Luffy loses a incredible amount of strength when he kept hitting Lucci's face to no effect. The best strategy Luffy could use, while waiting for himself to return to normal, is to run and hide from an opponent for the duration of the shrinkage. Another strategy is only using Gear Third for a few seconds for only one move so his shrinkage is minimized. His clothes shrink as well to fit his small size as it's one of the Devil Fruit's Abilities - Clothes expands or contracts according to the Devil Fruit's abilities's size. However, as of recent chapters this disadvantage has not been seen.

The known named techniques that are used by Luffy so far in this form are as follows:


 * Hone Fūsen (骨風船, Bone Balloon): Luffy inflates his body by blowing air into his bones. This is done by biting into his right thumb, presumably cutting it open down into to the bone, and then blowing air directly into the opened bone. This technique seems to give Luffy a sturdier defense than the regular balloon, since bullets now ricochet off of him instead of bouncing off him. This was first fully shown in Luffy's battle against Rob Lucci.


 * Gomu Gomu no Gigant Pistol (ゴムゴムの巨人の銃(ギガント･ピストル, Rubber Rubber Giant Pistol)): Luffy delivers a Gomu Gomu no Pistol with extremely high amounts of power due to the larger size of his fist. This was first fully seen being used against Rob Lucci. Its sheer power was able to fling him from the Bridge of Hesitation on to a Buster Call Battleship. In the English version of the video game One Piece: Unlimited Adventure (dubbed by FUNimation), this is called Gum-Gum Giant Pistol.


 * Gomu Gomu no Gigant Axe (ゴムゴムの巨人の斧(ギガント･アックス, Rubber Rubber Giant Axe)): Gomu Gomu no Ono with more power due to his enlarged foot and leg. This was first seen being used against Rob Lucci. Its sheer power is able to damage and create a hole in the deck of a Buster Call Battleship.


 * Gomu Gomu no Gigant Whip (ゴムゴムの巨人の鞭(ギガント･ウィップ, Rubber Rubber Giant Whip)): Gomu Gomu no Muchi with more power due to his enlarged foot and leg. This was first seen being used against Rob Lucci. Its sheer power is able to damage the mast of a Buster Call Battleship.


 * Gomu Gomu no Gigant Bazooka (ゴムゴムの巨人のバズーカ, Rubber Rubber Giant Bazooka): A Gear Third version of Luffy's Gomu Gomu no Bazooka attack. To create this attack, Luffy inflates both his arms by biting both his thumbs and blowing into them. With both his arms inflated to large proportions, Luffy delivers then the attack onto an opponent the same way he regularly does with a normal Gomu Gomu no Bazooka attack. This was first seen being used against Oars to break his spine.


 * Gomu Gomu no Gigant Jet Shell (ゴムゴムの巨人のＪＥＴ砲弾(ギガント・ジェットシェル, Rubber Rubber Giant Jet Shell)): While still in Gear Second, Luffy goes into Gear Third with Hone Fuusen. With the combination of Gear Second's speed and Gear Third's air within his bones, Luffy launches his air filled body and rams onto an opponent like a large cannonball. This move is rather reckless as Luffy suffers both from the excess burn on his body from Gear Second, and the difficulty of moving his body from Gear Third. This was first seen being used against Moria.


 * Gomu Gomu no Gigant Rifle (ゴムゴムの巨人回転弾(ギガント･ライフル, Rubber Rubber Giant Rifle)): Luffy activates Gear Third to expand one of his arms and then use it to launch a giant version of the original Gomu Gomu No Rifle at a target, drilling hard into the unfortunate target. This attack is strong enough to destroy the heavily-armored Pacifista and defeat a giant Vice Admiral, and was first seen being used to defeat PX-4 on the Sabaody Archipelago. The fist produced in this attack is approximately the same size as the entire body of the giant Vice Admiral Luffy uses it to defeat. This is called Gum-Gum Giant Rifle in the FUNimation subs.


 * Gomu Gomu no Gigant Stamp (ゴムゴムの巨人の印章, Rubber Rubber Giant Stamp): Luffy activates Gear Third and expands his foot to deliver a giant version of Gomu Gomu no Stamp. Incidentally, this was first used in conjunction with Mr. 3's Giant Candle Wall to push it back. This was first seen being used against Magellan in Impel Down.


 * Gomu Gomu no Gigant Fūsen (ゴムゴムの巨人の風船, Rubber Rubber Giant Balloon): Luffy activates Gear Third and expands his torso to create a giant version of his traditional Gomu Gomu no Fuusen. This move was powerful enough to cushion impact from a massive adversary and was first used to protect Ace and Mr. 3 from a punch of Sengoku in his giant form.

Situational Cases
During certain situations, Luffy is sometimes forced to adapt in his use of his Devil Fruit powers in order to fight an enemy. This is usually due to an attack inflicted by an enemy on him that leaves him at a disadvantage. To compensate, Luffy thus adapts to the situation and turns his disability into an advantage instead.

The known techniques that Luffy has had to create under such circumstances and their origin are as follows:


 * Gomu Gomu no Tonkachi (ゴムゴムのトンカチ, Rubber Rubber Hammer): A technique that Luffy had to temporarily come up with while on Little Garden. While the Straw Hat Pirates were on Little Garden, they faced off against four of Baroque Works' Officer Agents; Mr. 5, Miss Valentine, Miss Goldenweek, and Mr. 3. Mr. 3 has the power of the Doru Doru no Mi, which allows him to produce and control a wax-like substance from his body. He used this wax power several times to wrap a large wax cylinder around Luffy's feet and then later arm. Instead of slowing Luffy down, Luffy actually uses the wax cylinder to his advantage. Using it like a hammer, he first destroyed the pole on Mr. 3's wax creation with a cylinder wrapped around his feet. Luffy then later broke through Mr. 3's Candle Wall and pounded Mr. 3 himself with a cylinder on his arm. The cylinders that bound Luffy's feet and arm both broke upon impact. In the Viz Manga, this technique is called Gum-Gum Hammer and Gum-Gum Mallet in the FUNimation dub.


 * Gomu Gomu no Hanabi: Ougon Botan (ゴムゴムの黄金牡丹, Rubber Rubber Fireworks: Golden Peony): During Luffy's fight with Enel, Enel encased Luffy's arm in a Golden Ball he created by melting some gold with his Gloam Paddling technique. With this, Enel hoped to hinder Luffy's actions as he tossed him overboard the Maxim. Luffy however, despite burdened with this huge cumbersome object, was able to still move about and use his burden to his advantage in two techniques that he had to temporarily come up with. The first of these is Gomu Gomu no Hanabi: Ougon Botan. It is the same as Gomu Gomu no Fire Works, but with the Golden Ball attached to his arm. This technique was used against Enel's Raigoh. By swinging the Golden Ball around, Luffy was able to use it as a conductor to destroy the storm cloud. The lightning all zapped through the ball and was discharged. This is called Gum-Gum Fireworks: Golden Peony in the Viz Manga and FUNimation dub. According to Oda in a response to a fan in a SBS, Luffy himself didn't exactly know what he was doing when he did this technique. According to a fan poll, this is the nineteenth most favorite attack amongst fans with a total of 111 votes.


 * Gomu Gomu no Ougon Rifle (ゴムゴムの黄金回転弾, Rubber Rubber Golden Rifle): The same as Gomu Gomu no Rifle but with the Golden Ball attached to his arm. This move possesses much more speed than a regular Gomu Gomu No Rifle in that it creates a Sonic Boom when used. After destroying Enel's Raigoh with the Golden Ball, Luffy used this technique to defeat Enel and ring the Golden Bell of Shandora. This was so fast that even though Enel's Mantra ability could detect it, this was too fast for Enel to avoid. With this technique, Luffy was also able to break the Golden Ball encasing his arm as the ball hit the bell. In the Viz Manga and FUNimation dub, this is called Gum-Gum Golden Rifle. According to a fan poll, this is the thirteenth most favorite attack amongst fans with a total of 327 votes.


 * Gomu Gomu no Gigant Thor Axe (ゴムゴムの巨人の雷斧(ギガント・トールアックス), Rubber Rubber Gigant Thor Axe): A Gear Third move performed when Luffy enlarges his leg and thrusts it high into a low-lying thundercloud. When he brings it down, the charged limb unleashes a massive shock wave, powerful enough to cause the ground underneath to crumble. This was first seen used to defeat Shiki, and was only possible thanks to the storm that they were fighting in. Thor (which the attack is named after) is a Norse god.

Team Combinations
At certain times, Luffy would use his Devil Fruit powers in team combos with his crew. This is in relation to his bonds of friendship and comradery with the rest of them. The known named techniques that Luffy uses with others are as follows:


 * Armée De L'Air Gomu Shoot (空軍 (アルメ・ド・レール) ゴム・シュート, Air Force Rubber Shoot): A combo attack between Luffy and Sanji. Luffy stretches and grabs Sanji's leg, and as Sanji kicks forward, Luffy uses a Gomu Gomu no Rocket, propelling him forward at higher speeds than normal. This was first seen being used against Wapol. This is called Armée De L'air Air Assault in the Viz Manga, Taffy Trouncer in the 4Kids dub, and Armée De L'Air Assault Gum Shoot in the FUNimation dub.


 * Gomu Gomu no Tatsu Epaule Maki Muchi Shoot (ゴムゴムの龍 肩肉 巻き ムチ シュート, Rubber Rubber Dragon Shoulder Twister Whip Shoot): A combo attack of Luffy, Zoro and Sanji to kill a Sandora Lizard in the desert of Arabasta. It's a combination of Luffy's Gomu Gomu no Muchi, Zoro's Tatsumaki, and Sanji's Epaule Shoot. This is called Gum-Gum Tatsu Epaule Maki Whip Shoot in the FUNimation dub.


 * Gomu Gomu no 300 Pound Cannon (ゴムゴムの三百煩悩 [ポンド] 攻城砲 [キャノン]; Rubber Rubber 300 Pound Cannon): A combo attack between Luffy and Zoro. Luffy and Zoro use the Gomu Gomu no Cannon and the 108 Pound Hou at the same time. This is actually a 216 Pound Cannon, but Luffy decided that name was too long and hard to pronounce. Zoro expressed amused indifference and accepted the new name for the attack. This was first used against a huge wave during the Aqua Laguna to let the Rocket Man pass.


 * 600,000,000 Beli Jackpot (6おくベル・ジャックポット; 6億B • JACKPOT): This attack was a huge collaborative effort between Luffy, Zoro, Sanji, Robin and Franky in an all-out, multi-directional assault against a horde of zombies. Luffy provides his trademark punches to the assault. This was first seen being used against a group of Zombies.


 * Santōryū Gomu Gomu no Diable Mouton Jet Roppyaku Pondo Cannon (三刀流ゴムゴムの悪魔風羊肉JET六百煩悩攻城砲, Three-Sword Style Rubber Rubber Devil's Mutton Jet 600 Pound Cannon): A combo attack performed by all three top fighting members of the Straw Hat Crew: Zoro, Luffy and Sanji. Zoro performs a 108 Pound Hō, while Sanji activates his Diable Jambe technique and delivers a Mouton Shoot, then Luffy uses Gear Second and fires a Gomu Gomu no Jet Cannon. The impact of the three techniques hits a single target simultaneously. This was first seen being used against PX-4. In the FUNimation subs, this is called Santoryu Gum-Gum Diable Mouton Jet 600-Caliber Phoenix.


 * Gomu Gomu no Tonkachi Rifle (ゴムゴムのトンカチ回転弾, Rubber Rubber Hammer Rifle): A combo attack between Luffy and Mr. 3. Mr. 3 uses his Candle Lock technique on Luffy's hand to begin, whereupon Luffy stretches and twists his arm back before delivering a powerful blow aided by the hard wax. This was first used as the finishing blow to Minotaurus on Level 3 of Impel Down. Due to the extreme heat of the place, the Candle Lock only lasted for a very brief period of time, and the hammer melted as soon as the blow was dealt. This is called Gum-Gum Hammer Rifle in the Viz Manga and Gum-Gum Mallet Rifle in the FUNimation subs.


 * Gomu Gomu no Champion Rifle (ゴムゴムのチャンピオン回転弾 (ライフル), Rubber Rubber Champion Rifle): A technique in which does a regular rifle technique but aided with Mr. 3's wax. To avoid making contact with Magellan's poisonous skin, Luffy had Mr. 3 encase his arms and legs in a wax armor, allowing him to hit Magellan without worry of harming himself.


 * Gomu Gomu no Kaiten Ono (ゴムゴムの回転斧, Rubber Rubber Spinning Axe): Anime only. A combination of moves executed by Luffy, Zoro, Sanji, and Usopp. Luffy executes Gomu Gomu no Fusen (ゴムゴムの風船) as well as twisting his body, using the stored air to launch himself into the air. Then, Usopp aboard the Merry-Go fires a cannonball at Sanji, while Luffy shoots both of his arms towards the target. Sanji at this point Armeé de L'air Hana Shoots the cannonball at Zoro who executes 108 Pound Hou (百八煩悩鳳) to fire the cannonball up into the air and toward Luffy. Luffy catches the ball with his feet, the inertia of the cannonball spinning him vertically several times causing his legs to twist with each revolution. After all of the cannonball's inertia is gone, Luffy drops it and proceeds to spin forward releasing the full force of the stored energy from the winding, his body falling towards the target during all this. As Luffy approaches the target he stretches his legs out, which, through the speed of his spinning, creates the image of a large rotary blade. This attack impacts with the target, cutting it in half. The force of this seems out of Luffy's control since Zoro and Sanji has to stop him after cutting his target. This was first used to destroy Ratchet's castle in the seventh One Piece movie.


 * Kamehame Gomu Gomu no Bazoo'ha (かめはめゴムゴムのバズー波; Turtle Destructive Rubber Rubber Bazoo'ha): A combo attack that Luffy and Goku invented together to use against Buggy and Emperor Pilaf's Tettiri No.55, during the One Piece/Dragonball crossover comic special, Cross Epoch. This is a simultaneous attack of Luffy's Gomu Gomu no Bazooka and Goku's Kamehameha Wave. The name of this technique is a combination of their individual attack names.


 * Gomu Gomu No Kamehameha (ゴムゴムのかめはめ波; Rubber Rubber Turtle Destructive Wave): This is a special combo maneuver that Luffy invents with Goku during the One Piece/Dragonball Special. The pair create a 360o Kamehameha Wave attack as Luffy swings Goku round and round to help him blast the surrounding Enel horde.

Early One Piece
Luffy's stretching powers were a result of Oda's desire for the fighting style to be silly, so that no matter how tense a situation got, the reader could relax without becoming stressed out. Oda originally just called the fruit the 'Gomu Fruit'. But his editor pointed out there really existed a Rubber fruit so Oda changed the name.

Oda rewrote several details about the Gomu Gomu no Mi in his early version of One Piece Romance Dawn V.1 and Romance Dawn V.2. In V.1, the Devil Fruit the fruit was the same except the Gomu Gomu no Mi was the fruit of the Gomu Gomu tree which grew once every 50 year and there were no named attacks in V.1. In V.2 the first named attack is given, however rather say "Gomu Gomu..." at the start of all his moves, Luffy simply said "Right hand stopper!". Little detail was given on the Devil Fruit itself in V.2.

Translation and Dub Issues
Viz, 4Kids and FUNimation all call this fruit the "Gum-Gum Fruit". The only English version of the series to ever translate it flat out as the "Rubber Rubber Fruit" is the Odex version. This is because it has no connections to the North American versions at all. Despite translating Gomu as "Gum", all English versions refer to Luffy as a "Rubberman".

Trivia

 * In the 3rd Movie, it is shown that Luffy won't sink in water in his Gomu Gomu no Fuusen. However, this is noncanon.

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