Ikkaku is a woman with curly dark brown hair and light brown eyes, she is wearing a yellow and orange hat. Like all the other members of the Heart Pirates, she wears a boiler suit with the crew's Jolly Roger imprinted on the left breast.
A month before Trafalgar Law formed an alliance with the Straw Hat Pirates, Ikkaku and the other Heart Pirates went to Zou and were left under the watch of Nekomamushi. Ikkaku, Uni, and Clione were against forming the alliance, but they were outvoted.
Four Emperors Saga
After Law arrived at Zou around a week later, the Heart Pirates happily reunited with their captain when he came into the Whale Forest.
That night, the Heart Pirates briefly met and greeted Monkey D. Luffy before Law went to have a private conversation with the Straw Hats. The Guardians later threw a party for the Straw Hats that lasted throughout the night, and the Heart Pirates joined in.
Wano Country Arc
On the day of the Fire Festival, the Heart Pirates entered the battle against the Beasts Pirates. After the guards at the torii gates were defeated by the Straw Hats, the Heart Pirates and the Scabbards (except Kin'emon and Denjiro) traversed to the back of Onigashima in the Polar Tang. When the submarine got close enough, it rose to the surface and Law teleported himself, Bepo, Shachi, Penguin, and the Scabbards with them to Onigashima's back entrance. Once they left, the rest of the crew submerged back underwater.
- Ikkaku means "narwhal" in Japanese.
- One Piece Manga and Anime — Vol. 81 Chapter 810 (p. 4) and Episode 757, Ikkaku is first seen.
- SBS One Piece Manga — Vol. 83 (p. 42), Ikkaku's name is revealed.
- SBS One Piece Manga — Vol. 90, https://one-piece.com/special/sbs/detail/9.html
- One Piece Manga and Anime — Vol. 70 Chapter 700 (p. 10) and Episode 629, Law confirm the Heart Pirates whereabouts.
- One Piece Manga and Anime — Vol. 81 Chapter 807 (p. 15) and Episode 757, Law and the Heart Pirates reunite.
- One Piece Manga and Anime — Vol. 81 Chapter 815 (p. 12, 14) and Episode 766.
- One Piece Manga and Anime — Vol. 82 Chapter 822 (p. 5) and Episode 776, The Ninja-Pirate-Mink-Samurai Alliance divided.
- One Piece Manga and Anime — Vol. 94 Chapter 951 (p. 5-7) and Episode 951.
- One Piece Manga — Vol. 97 Chapter 979.
- One Piece Manga — Vol. 97 Chapter 984.
- One Piece Manga — Chapter 1015 (p. 15-16).