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Megalo is a shark that lives on Fishman 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 has a usual shark design, the only difference is that 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.


For a shark, Megalo is very friendly. He is also 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.

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]

Abilities and PowersEdit

Being a gigantic 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.



Megalo Witness

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]

Fishman Island ArcEdit

Meeting Luffy and Adventure Outside Hard-Shell TowerEdit

Megalo was first seen being freed from the Kraken accidentally when Luffy attacks it.[6] Later, he tells King Neptune about the pirates, and the king invites them to Ryugu Palace, apparently as an act of gratitude.[7] Megalo then carries Luffy and his companions as they make their way to the castle.

Shirahoshi and Luffy Leave the Tower

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

He is then seen in Princess Shirahoshi's room while the princess and Luffy are having a conversation. He growls at Luffy for making Shirahoshi cry by saying "I don't like you!".

After Luffy asks Shirahoshi about where she wants to go, she tells him that she wants to go to the Sea Forest. Knowing that Shirahoshi's size will draw attention, Luffy decides to have Shirahoshi stuffed into Megalo. Megalo then leaves the room with the princess crammed inside his mouth while Luffy stands on top of him. As he breaks through the doors, he knocks out several invading pirates. Megalo copes with having the princess stuffed inside him as he floats out of the palace and towards the Sea Forest.

While hovering above Coral Hill, Luffy sees Chopper, Sanji, and a bandaged Hatchan. Once Luffy jumps down to meet them, he is met with accusations from the Fishman Island citizens for mermaid kidnappings. Megalo has finally reached his limit and spits out Shirahoshi. The Fishman Island citizens instantly concludes that this is a Mermaid Princess kidnapping.

The citizens then tie up Luffy and his friends, but are then interrupted by the arrival of Vander Decken IX. After Luffy pummels Decken into the ground with only his legs, Luffy then wakes up Megalo. Megalo then carries the princess, Luffy, and his friends as they attempt to flee the scene. Decken calls out to Wadatsumi to attack them, but Luffy beats back the giant with a Jet Pistol. The shark and the group then continue their path to the Sea Forest.

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

The Coup of the New Fishman PiratesEdit

After Jinbe finishes explaining his story, a visual Den Den Mushi appears and broadcasts Hody's speech to Fishman Island. Hody explains his plan of recreating the Ryugu Kingdom with himself as the ruler, which includes executing King Neptune. After Hody finishes his speech, Shirahoshi hops on Megalo, preparing to return to Ryugu Palace, but Jinbe stops them. Luffy attempts to hop on Megalo, but Jinbe stops him as well. After an argument between Jinbe and Luffy, Jinbe eventually comes up with a plan.

Shirahoshi locked up in chains

Megalo, Shirahoshi, and Jinbe are captured by the New Fishman Pirates.

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

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

Before he could do any fatal damage, Shirahoshi and the citizens call out for Luffy. Megalo spits 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.

The Beginning of PeaceEdit

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

Megalo is then seen enjoying the banquet at Ryugu Palace. Later, he and the people of Fishman Island bid the Straw Hats farewell as they depart to the New World.

Whole Cake Island ArcEdit

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


Video GamesEdit

Non-Playable AppearancesEdit


  • Megalo (Μεγάλο) is Greek, meaning "large".
  • He is named after the extinct shark species Megalodon.[9]


  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. SBS One Piece MangaVol. 64, Megalodon is the basis of Megalo.

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