Nekomamushi

Master Nekomamushi is a feline mink and the guardian of the Whale Forest on Zou, dubbed the "Ruler of Night" as he rules over the Mokomo Dukedom from 6:00 PM to 6:00 AM. He and Inuarashi serve as retainers for the Kozuki Family of Wano Country.

Alongside Inuarashi, he was once a member of the Whitebeard Pirates and Roger Pirates, serving under Kozuki Oden. Pedro has claimed that he and Inuarashi must not be allowed to die because "the world is waiting for them".

Appearance
Nekomamushi is a large, yellow feline mink with sharp teeth, claws, and a very thick striped tail. He has wild, bushy blonde hair resembling a lion's mane running around his neck and down his back, and there is a scar running from the left side of his forehead down to his cheek. His outfit consists of a large robe decorated with circles, a haramaki around his waist, sandals, a light-colored shirt, and pants. In addition, he frequently smokes a kiseru.

Like all the retainers of the Kozuki Family, Nekomamushi bears the family crest somewhere on his body.

While being tortured by Jack, he lost his left hand and part of his left forearm due to several members of the Beasts Pirates spearing them off.

Personality
Nekomamushi takes great pride in his status as one of the two rulers of the Mokomo Dukedom alongside Inuarashi, having proclaimed the country to be his when the night comes during his first encounter with Jack.

Unlike his former friend Inuarashi, Nekomamushi is aggressive and merciless; Inuarashi has described him as an "obstinate and stubborn imbecile", comparing him to Jack himself, and he is completely willing to damage the historical Mokomo Dukedom while fighting, referring to doing so as a "minor detail". Nekomamushi can be stubborn even when not angry, as demonstrated when he kept ignoring Tony Tony Chopper's orders to recuperate in order to have fun. He does not like to be ordered around, having claimed that he went to bed of his own volition rather than on Chopper's orders while being treated by the doctor, and describes himself as a "freedom-loving man"; in spite of his bravado, however, he is afraid of needles.

Despite his stubborn and sometimes abrasive behavior, Nekomamushi genuinely care for his friends and fellow minks; he took care of Bepo and the other Heart Pirates when they arrived on Zou and did not expect them to help him defend the Mokomo Dukedom against the Beasts Piraes, though he was impressed when they decided to do so anyway. Additionally, while being tortured by Jack and his men, Nekomamushi convinced the Beasts Pirates to aim their spears at him instead of at his incapacitated fellow minks. He is also firmly loyal and possesses an incredibly strong will, having absolutely refused to reveal that Raizo was on Zou despite extensive torture at the hands of Jack, and was fully willing to risk the kingdom's destruction in order to protect his friend. However, he does not look kindly upon intruders, having claimed he will devour any that he finds.

Nekomamushi has many feline behaviors that can sometimes get the better of him; he likes to lick his paws, play with balls and cat toys, and eat catnip. Unlike most cats, however, he loves taking baths. His favorite food is lasagne.

Like many others, Nekomamushi has his own unique laugh: "Goronyanya".

Kozuki Family
Nekomamushi is very loyal to the Kozuki Family of Wano Country, whom he serves as a retainer alongside Inuarashi. His loyalty to the family is so great that he risked sacrificing his kingdom and its inhabitants just to protect Raizo, another retainer of the clan, and later agreed to form a truce with his bitter rival Inuarashi in order to appease Kozuki Momonosuke.

Heart Pirates
Nekomamushi took the Heart Pirates because Bepo is a native of Zou. He did not expect them to help him fight Jack, but Bepo insisted on defending his home, which impressed Nekomamushi.

Pekoms
As with Bepo, Nekomamushi cares for Pekoms despite his status as a pirate; upon finding Pekoms badly injured after being shot multiple times, Nekomamushi confronted Capone Bege, who was nearby, and demanded to know who he was and why Pekoms was injured despite his own injuries having not yet fully healed.

Straw Hat Pirates
Like the rest of the Mink Tribe, Nekomamushi is very grateful to the Straw Hat Pirates, particularly Sanji, for saving them. When Sanji was forced to leave Zou with Bege for his impending marriage, Nekomamushi understood his crewmates' anguish and asked Wanda and Carrot to not tell anyone what happened, which prompted Nami to thank him for his understanding. However, he is not completely compliant with Tony Tony Chopper's orders for him to recuperate due to them restricting his freedom.

Upon learning of Nico Robin's ability to read Poneglyphs, Nekomamushi feared for her safety, but Robin assured him that her crewmates would protect her. He was later shocked to learn that Franky was Tom's apprentice and that Brook was the sole survivor of the Rumbar Pirates that Crocus had searched for.

Jack
When night fell during the first day of the Beasts Pirates' battle with the minks, Nekomamushi was immediately informed of Jack's invasion and wasted no time in rushing to the scene before immediately attacking the pirate. After Jack incapacitated the minks with poison gas and tortured him for information regarding Raizo's whereabouts, Nekomamushi swore that he would never forget Jack's actions and that his curse would follow the pirate until he died.

Inuarashi
Though they were once friends, Nekomamushi and Inuarashi are currently on very bad terms with each other; because of this, they avoid meeting face-to-face. Upon accidentally meeting, they exchanged hostile words and insults before preparing to enter a battle to the death despite their respective injuries. It was hinted by Momonosuke that their quarrel is related to his father, Kozuki Oden.

Despite their present-day enmity, Inuarashi and Nekomamushi agreed to form a truce in order to avoid agitating Momonosuke and while reminiscing about their past adventures, they became very jolly and friendly with each other again.

Abilities and Powers
As the leader of the Whale Forest Guardians, Nekomamushi has authority over the forest's inhabitants. During night time, he also becomes the main authority figure of the Mokomo Dukedom.

Nekomamushi is equal in power to his daytime counterpart and former friend Inuarashi, causing all of their battles to end in stalemates; this was proven when he fought evenly against Jack, the right hand man of the Yonko Kaido with a 1,000,000,000 bounty, before the latter poisoned him with Caesar Clown's Koro gas. Even while Nekomamushi was recovering from severe injuries, Sanji confidently left the protection of his comrades from the Firetank Pirates to him, while Capone Bege felt wary of facing him and called him a monster.

Nekomamushi possesses incredible physical strength, demonstrated when he easily flipped Jack over iand slammed him into the ground in his mammoth form, and is also extremely fast, having traveled from the Whale Forest to Kurau City in a matter of seconds. While all the other minks were immediately weakened and left unable to move by the Koro gas, Nekomamushi retained much of his strength and almost tore apart the chains that bound him to his crucifix, demonstrating tremendous endurance. Like all minks, he can use Electro.

It is unknown how much the loss of his hand affects his overall combat abilities, but he managed to clash evenly with a one-legged Inuarashi.

Weapons
Nekomamushi wields a staff resembling a jumonji yari with a fire-shaped blade on each end, which he can channel Electro through.

Past
In the distant past, Nekomamushi and Inuarashi were friends. As retainers of the Kozuki Family, they traveled the seas together with Kozuki Oden, which led to them sailing on the ships of both Whitebeard and Gol D. Roger. However, Nekomamushi and Inuarashi never went to Raftel.

Some time later, after returning from the voyage barely alive, they had begun hating each other to the point that they began fighting whenever they were together, so they decided that Inuarashi would rule Zou during the day and Nekomamushi would rule during the night.

When Bepo and the Heart Pirates arrived, Nekomamushi took them under his care because, despite his status as a pirate, Bepo was a native of the island.

As night fell during Jack and the Beasts Pirates' invasion of Zou, Nekomamushi was informed of their desire to find Raizo and roared before rushing to Kurau City alongside his Guardians, where he declared that the country now belonged to him. After grabbing Jack by the trunk and slamming him into some nearby buildings, Nekomamushi proclaimed that he would devour any samurai who set foot on Zou before watching as Jack reverted to his human form.

Noting that Jack had eaten an ancient form of the Zou Zou no Mi, Nekomamushi told him that he should have retreated when Inuarashi was giving him the chance to do so because of the Mink Tribe's sheer military size before letting Bepo know that he would not force him to fight due to his status as a guest, only to be impressed when Bepo and his crewmates declared that they would fight regardless. Nekomamushi proceeded to battle with Jack for the next twelve hours, switching out with Inuarashi at 6:00 A.M., and repeated this for four more days until Jack, having lost his patience, unleashed Caesar Clown's Koro gas against the minks, who were immediately incapacitated and rendered helpless by its poison. Jack and his men proceeded to crucify and torture Nekomamushi alongside Inuarashi and several other strong minks, which prompted Nekomamushi to declare that he would never forget or forgive Jack's actions. During the torture, Nekomamushi had his left hand speared off in order to protect some of his fellow minks. The torture ceased when Jack heard about Doflamingo's defeat and capture, causing Jack to leave Zou in order to rescue him while leaving behind some of his subordinates. Soon afterward, an unconscious Nekomamushi was found by Sanji and his group.

After forcing the Beasts Pirates to retreat, Sanji's group had Caesar neutralize the poison gas before tending to Nekomamushi and the rest of the minks.

While Capone Bege was dealing with Sanji inside his body, Nekomamushi confronted Bege after finding an injured Pekoms, which prompted Sanji to throw his crewmates out of Bege's body. Not wanting to fight Nekomamushi despite his visible injuries, Bege fled with Sanji and Caesar. Realizing that the remaining Straw Hats wanted the minks present to forget about what just happened, Nekomamushi told Wanda and Carrot to keep quiet about the incident and decided to look after Pekoms before hurling himself toward some catnip.

Zou Arc
After Monkey D. Luffy and his group came to Zou, Tony Tony Chopper went to check up on Nekomamushi after visiting Inuarashi.

Upon finding Nekomamushi taking a bath while eating lasagne, Chopper angrily reminded that he was not supposed to take baths or eat light foods, only for Nekomamushi to declare that he enjoyed freedom while getting out of the bath. Noting that he was still not used to not having his left hand, Nekomamushi hugged Robin and Usopp while declaring that he would one day repay the debt that he owed the Straw Hats, but immediately began chasing a bouncing ball, which caused his wounds to reopen. After getting in bed, Nekomamushi had Robin grab a foxtail and wave it in front of him so he would be distracted while Chopper gave him his shot. Having received his shot, Nekomamushi claimed that he felt better already, but was ordered to stay in bed by Chopper, who pointed out that medicine did not work this quickly.

Shortly afterward, Nekomamushi left his bed and followed the other Straw Hats in order to meet Luffy and Zoro, whom he slammed into for a "gratitude garchu". After Law warned Luffy about the threat of Kaido and the danger that the country would be in if they stayed on Zou, Nekomamushi decided to party with the members of the alliance and the other minks.

The following morning, Nekomamushi was alerted by Bariete ringing the town bells, which prompted him to set out alongside the Guardians in search of intruders. Upon spotting Inuarashi nearby, Pedro told Nekomamushi to retreat a little, but he and Inuarashi accidentally made eye contact, leading to them confronting each other. After exchanging insults regarding their lost limbs, Nekomamushi and Inuarashi began a fight to the death, only to be interrupted by Kin'emon demanding that they stop. When Kin'emon asked him if Raizo had come to Zou, a tearful Nekomamushi knelt alongside the rest of the minks and revealed that Raizo was safe. As a shocked Usopp pointed out how the Beasts Pirates were going to kill all the minks and lay waste to their city because they would not reveal Raizo's location, Nekomamushi apologized for keeping it a secret from the Straw Hats before explaining how the minks would never betray the Kozuki Family, whom they had considered family for several generations.

While conversing with Kin'emon, Nekomamushi and Inuarashi began arguing again, prompting Kozuki Momonosuke to reprimand them for doing so because it would make his father sad to see them behaving like this. Not wanting to disappoint their lord, Nekomamushi and Inuarashi apologized and called a truce, to the delight of their fellow minks. Shortly afterward, Inuarashi and Nekomamushi escorted the samurais and the Straw Hats to a secret area in the Whale Forest where Raizo was hidden.

After Robin deciphered the Road Poneglyph hidden within the Whale Tree, Nekomamushi revealed that the Guardians were tasked with protecting the Poneglyph, which was the reason behind the sacred nature of the Whale Forest. Following up on Inuarashi's explanation of how the four Road Poneglyphs reveal the location of Raftel once their information is combined, Nekomamushi noted that the Straw Hats were on the path to obtaining them all since they were planning on going to Whole Cake Island before revealing that both Kaido and Charlotte Linlin possessed a Road Poneglyph. When some of the Straw Hats began panicking at the thought of having to steal the Road Poneglyphs, Nekomamushi revealed that there existed copies of the text printed on the Road Poneglyphs and that most people just tried to collect these instead. However, Nekomamushi admitted that he was more concerned about Robin's safety because she would likely be the target of various groups who wanted her to read the Poneglyphs, though he was pleased with her fellow Straw Hats promising to protect her. With Momonosuke's permission, Nekomamushi revealed that the Kozuki Family created the Poneglyphs 800 years ago before tearing up alongside his fellow retainers as Kin'emon revealed Kozuki Oden's execution at the hands of Kaido and the shogun of Wano Country.

Having revealed that Oden was part of Gol D. Roger's crew, the samurais and the two rulers of Zou revealed his will to open Wano Country to the world. After he and Inuarashi declared that the Mink Tribe would help the Kozuki Family fight Kaido and the shogun of Wano Country, Nekomamushi shed tears at the sight of Momonosuke expressing his desire to avenge the deaths of his parents and protect his retainers. After Luffy agreed to help Momonosuke defeat Kaido, Nekomamushi grinned as Inuarashi officially formed the Ninja-Pirate-Mink-Samurai Alliance with Momonosuke, Luffy, and Law. When Luffy brought up his mission to bring back Sanji from his arranged marriage, Nekomamushi noted that Inuarashi had not heard about Sanji being taken because he was sleeping at the time.

As group left the secret room, Nekomamushi realized that he recognized Luffy's Straw Hat, which prompted Inuarashi to reveal that he and Nekomamushi once traveled with Oden aboard the ships of both Whitebeard and Roger, though they never went to Raftel. As he reminisced about his days of adventure, Nekomamushi happily danced with Inuarashi while he did the same. When Nami mentioned Crocus, Nekomamushi wondered how he was doing and if he had ever found the pirate crew that he was searching for, only to be shocked when Brook revealed that crew was his and had been wiped out. Promising to one day detail all of Oden's adventures, Nekomamushi continued descending the Whale Tree while revealing that they intended to find and recruit Marco, whom he noted had vanished after clashing with Marshall D. Teach a year ago during the Payback War, though he had an idea of where Marco might be. Having decided to search for Marco with his subordinates, Nekomamushi stated that they would need to make a Vivre Card for Kin'emon. Suddenly, Zou began shaking violently, causing a shocked Nekomamushi to realize that Zunisha was crying out before wondering to know what was going on.

As everything shook around him, Nekomamushi noted that something was happening to Zunisha before listening as Momonosuke detailed how Zunisha was being forced to walk for eternity due to having committed a crime in the past. After Zunisha wiped out Jack's fleet on Momonosuke's command, Nekomamushi stated that Zou would no longer be safe if they did not figure out how Jack found Zunisha and expressed amusement at Luffy's cheeriness.

Later on, Pedro and several other minks volunteered to join the Sanji retrieval team, but Nekomamushi decided to only allow Pedro to go because he could keep Pekoms in line. Soon afterward, as the Sanji retrieval team departed from Zou, Nekomamushi, along with the rest of those present save the Straw Hats left behind, was shocked when Luffy jumped off Zunisha with his party.

Major Battles

 * Mink Tribe and Heart Pirates vs. Beasts Pirates
 * Nekomamushi vs. Jack (multiple times)
 * Nekomamushi vs. Inuarashi (interrupted)

Trivia

 * "Neko Mamushi", although not written in kanji, means "Cat Viper", which the VIZ translation used as a title, under the impression that his real name had not yet been revealed. The title of "Master" was added on later.
 * Brook's voice actor, Chō, made-up a song about "going off to meet the Cat Viper." It impressed Oda enough that he decided to integrate Cat Viper into the manga, as well as the song itself.
 * His relationship with Inuarashi seems to be based on the idea that a cat and a dog cannot get along well with each other, evidenced by their rocky relationship.
 * His design is similar to the Cheshire Cat from Lewis Carroll's Alice's Adventures in Wonderland.
 * His love of lasagne is similar to the comic strip cat Garfield, created by Jim Davis.

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