Laboon is a whale that lives at the entrance of Grand Line. He hits himself against the Red Line (the continent) desperate by the return of some pirates who promised him to gather him after their adventures, but those pirates never returned. Luffy fight against Laboon to stop that madness and he promised to him that when he becomes the Pirate King he would return to fight against him again. This way he give hopes to Laboon and he draw over him his pirate symbol so that he don't forget promise.

One of the Mizuta twins of the Rumbar Pirates, the elder one. Mizuta Madaisuki admired Brook's fencing style. He died in combat by a head piercing sword while fighting some pirates who used poisoned weapons. His name is a pun on "mizutama madaisuki" (I like dots).

One of the Mizuta twins of the Rumbar Pirates, the youngest one. After fighting against some pirates who used poisoned weapons, Mizuta Mawaritosuki died singing along with the rest of the survivors from the Rumbar Pirates while singing Binks' Sake so that someday Brook could make it reach for Laboon. He died from the effects of the poison while singing. His name is a pun on "mizutama waritosuki" (dots ain't bad), reflexed in his shirt with less polka dots than his elder brother's one.

Known as "Yorki the Calico", captain of the pirate crew that abandonment Laboon at the entrance of Grand Line with the promise of return for him after their trip.