Laboon

Laboon is an extremely large whale (of comparable or greater size than the monsters in Calm Belt), native to West Blue, whom the Straw Hat Pirates encounter immediately after entering Grand Line. Fifty years earlier, Laboon had been left at the bottom of Reverse Mountain by a group of pirates who had befriended him. Since his species travels in pods, he had forged a powerful bond of friendship with these pirates, and he patiently waited for them at Grand Line's entrace. His caretaker is a doctor named Crocus, who normally mans the Lighthouse that introduces travelers into Grand Line.

Crocus revealed to the Straw Hat Pirates that Laboon's friends effectively abandoned him by fleeing the Grand Line through the Calm Belt. It is unknown whether these pirates are alive or dead. The old doctor has cared for Laboon ever since his friends left him. Although Laboon knows the truth about his friends, he refuses to admit to himself that they are gone. Laboon has many scars on his head from slamming into Reverse Mountain, for he believes he can destroy the mountain and return to West Blue.

Monkey D. Luffy, in an effort to give Laboon a renewed sense of hope, picks a fight with the whale by jamming the Going Merry's mast into his head. After the battle (which Luffy calls a draw), Luffy promises to Laboon that he will return to see him, under the guise of wanting a rematch. As a sign of this, Luffy paints the Strawhat Jolly Roger on Laboon's head, commenting that the insignia will wash away if Laboon hits Reverse Mountain further. The Strawhats depart, leaving behind two important friends.

Originally, in the Japanese manga and anime, the appearance of Laboon is also the introduction of Mr. 9 and Miss Wednesday, two Frontier Agents of Baroque Works who are responsible for bringing the Straw Hat Pirates to Whisky Peak (Misty Peak in the English dub). However, this brief encounter was deemed to be too controversial and violent by 4Kids for American audiences, so Laboon was passed off as an iceberg that was effectively destroyed by Monkey D. Luffy. (In the July 2006 English issue of Shonen Jump, there is a page featuring upcoming One Piece cards; in this, he is called "Raboon," but his name remains "Laboon," in the manga itself.)

This missing "arc" was also significant in it was originally how Nami came to have a Log Pose, though this was also (badly) written around in the English anime(after Luffy breaks the Eternal Post given to him by Miss All-Sunday vivi says she has another pose given to her by Igiram making the point and importance of him giving it to the straw hats unnecessery).