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Megalo is a Megalodon shark that lives on Fish-Man Island. He is the beloved pet of Princess Shirahoshi[2] and former pet of the Neptune Army.[1]


Megalo is a black shark with a white underbelly. He wears a shirt from the Criminal fashion line.

He is several times larger than an average shark, approximately the same size as the Thousand Sunny, though he is still smaller than Neptune. His mouth is also large enough to cram Shirahoshi into it, but apparently causes him great stress.


Megalo's Size
Megalo's size compared to Luffy (an average human) and his friends.
Megalo Manga
Megalo in the manga.


Despite being a shark, Megalo is very friendly and very loyal since he willingly went through with Luffy's idea of stuffing Shirahoshi in his mouth to sneak her out of Hard-Shell Tower. He also is somewhat protective of Shirahoshi as he was angry at Luffy when he made her sad.[5] He appears to be very secretive since he only told Shirahoshi about Otohime's true killer and not to anyone else.[1]




Megalo is Shirahoshi's beloved pet and he was the only one who Shirahoshi can talk to while she was locked up in Hard-Shell Tower. He even trusted her with the identity of her mother's assassin.


Straw Hat PiratesEdit

Megalo developed a friendly relationship with the Straw Hats since they saved him from the Kraken. Megalo personally carried Luffy and his friends to Ryugu Palace. The shark trusts Luffy well enough to assist him on a few occasions such as sneaking Shirahoshi out of the palace and hiding him in his stomach while arriving at Gyoncorde Plaza.[1]


Hody JonesEdit

Megalo was the only one who saw Hody Jones murder Queen Otohime and told Shirahoshi. When Shirahoshi revealed what Megalo told her, Megalo growled and snapped at Hody, showing that he hated him for his crime.

Abilities and PowersEdit

Being a shark, Megalo possesses all the abilities common to the animal, only far greater. Despite being a fish, he is also capable of breathing outside of water. He is strong enough to carry Shirahoshi on his back and has the endurance to hold her in his mouth for a while. Megalo can also handle deep underwater pressure of ten thousand feet.



Megalo Witnesses Hody's Assassination of Otohime

Megalo witnesses Hody's assassination of Otohime.

At one time, Megalo was the pet of the Neptune Army. He was the only one who witnessed Hody Jones killing Otohime. Even so, he neglected to tell the people about it. After Megalo became Shirahoshi's pet, he told the princess about the incident in secret.[1] At some point, while away from Ryugu Palace, Megalo ended up getting captured by the Kraken.[2]

Fish-Man Island SagaEdit

Fish-Man Island ArcEdit

Megalo was first seen being freed from the Kraken accidentally when Luffy attacked it.[6] After returning to Fish-Man Island, he told King Neptune about the pirates. He later accompanied the king as he invited them to Ryugu Palace, apparently as an act of gratitude.[7] Megalo then carried Luffy and his companions as they made their way to the castle.

Shirahoshi and Luffy Leave the Tower

Megalo and Luffy sneaking Shirahoshi out of Hard-Shell Tower.

He was then seen in Princess Shirahoshi's room while the princess and Luffy were having a conversation. He growled at Luffy when he made Shirahoshi cry by saying "I don't like you!".

After Luffy asked Shirahoshi about where she wanted to go, she told him that she wanted to go to the Sea Forest. Knowing that Shirahoshi's size would draw attention, Luffy decided to have Shirahoshi stuffed into Megalo. Megalo then left the room with the princess crammed inside his mouth while Luffy stood on top of him. As he broke through the doors, he knocked out several invading pirates. Megalo coped with having the princess stuffed inside him as he floated out of the palace and towards the Sea Forest.

While hovering above Coral Hill, Luffy saw Chopper, Sanji, and a bandaged Hatchan. Once Luffy jumped down to meet them, he was met with accusations from the Fish-Man Island citizens for mermaid kidnappings. Megalo finally reached his limit and spit out Shirahoshi. The Fish-Man Island citizens instantly concluded that this was a Mermaid Princess kidnapping.

The citizens then tied up Luffy and his friends, but were then interrupted by the arrival of Vander Decken IX. After Luffy pummeled Decken into the ground with only his legs, Luffy then woke up Megalo. Megalo then carried the princess, Luffy, and his friends as they attempted to flee the scene. Decken called out to Wadatsumi to attack them, but Luffy beat back the giant with a Jet Pistol. The shark and the group then continued their path to the Sea Forest.

Megalo eventually reached the Sea Forest where the group got acquainted with Franky, Den, and Jinbe. Megalo then rested right next to the Thousand Sunny as Jinbe explained about letting Arlong loose into the East Blue as well as the ideals of Queen Otohime and Fisher Tiger.

After Jinbe finished explaining his story, a visual Den Den Mushi appeared and broadcasted Hody's speech to Fish-Man Island. Hody explained his plan of recreating the Ryugu Kingdom with himself as the ruler, which included executing King Neptune. After Hody finished his speech, Shirahoshi hopped onto Megalo, preparing to return to Ryugu Palace, but Jinbe stopped them. Luffy attempted to hop on Megalo, but Jinbe stopped him as well. After an argument between Jinbe and Luffy, Jinbe eventually came up with a plan.

Shirahoshi, Jinbe, and Megalo Bound

Megalo, Shirahoshi, and Jinbe are captured by the New Fish-Man Pirates.

Megalo later carried Jinbe and Shirahoshi on his back and Luffy in his mouth, heading to Gyoncorde Plaza to save the king. Megalo, Shirahoshi, and Jinbe saw what appears to be Neptune. When they approached it, they got ensnared in a net. They were then tied up and brought to the plaza.

When Hody gloated about how he was the one behind Otohime's assassination, Shirahoshi revealed that Megalo had already told her but she chose to keep it to herself to fulfill her mother's dying wish. Hody nagged at Megalo for revealing it only to a fool and proceeded to attack Neptune.

Before he could do any fatal damage, Shirahoshi and the citizens called out for Luffy. Megalo spit out Luffy, allowing him to deal a heavy blow to Hody Jones. Megalo remained in the plaza throughout the whole battle and sat next to the Thousand Sunny during the aftermath of the battle.

Megalo was then seen pulling the Thousand Sunny (in blimp mode) away from the plaza as the Straw Hats did not want to be praised as heroes. However, a royal soldier caught up with them and Neptune invited the pirates to a banquet through a Den Den Mushi.

Megalo was then seen enjoying the banquet at Ryugu Palace. Later, he and the people of Fish-Man Island bid the Straw Hats farewell as they departed to the New World.

Four Emperors SagaEdit

Zou ArcEdit

As Neptune and his three sons prepared to depart for the upcoming Levely, Shirahoshi held on to Megalo, afraid of going to the surface.[8]

Wano Country ArcEdit

After the Levely, Megalo was present in the Ryugu Palace throne room with the Neptune Family while Neptune was speaking with Garp.[9]


Video GamesEdit

Non-Playable AppearancesEdit


  • Megalo (Μεγάλο) is Greek, meaning "large".
  • He is based on and named after the extinct shark species Megalodon.[10]


  1. 1.0 1.1 1.2 1.3 1.4 One Piece Manga and Anime — Vol. 64 Chapter 633 and Episode 553.
  2. 2.0 2.1 2.2 One Piece Manga and Anime — Vol. 62 Chapter 612 and Episode 531, Megalo is introduced.
  3. One Piece Blue Deep: Characters World (p. 178) , Megalo's birthday is given.
  4. One Piece 15th Anniversary: Dive to Grand World , his size is revealed.
  5. One Piece Manga and Anime — Vol. 62 Chapter 613 (p. 12) and Episode 532, Megalo gets angry at Luffy for making Shirahoshi cry.
  6. One Piece Manga and Anime — Vol. 62 Chapter 605 (p. 14-15) and Episode 525, Megalo is freed.
  7. One Piece Manga and Anime — Vol. 62 Chapter 611 and Episode 530, King Neptune and Megalo meet the Straw Hats.
  8. One Piece Manga — Vol. 82 Chapter 823.
  9. One Piece Manga — Vol. 95 Chapter 956 (p. 2).
  10. SBS One Piece Manga — Vol. 64, Megalodon is the basis of Megalo.

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