Laboon is an Island Whale the Straw Hat Pirates encounter immediately after entering the Grand Line. 50 years ago, after being separated from his pod as a baby, Laboon became a close friend of the Rumbar Pirates, but, for safety purposes, they had to leave him under the care of Crocus. The pirates promised they return for Laboon someday, and the whale still awaits their return to this day. As a former and the only surviving member of the Rumbar Pirates, it is Brook’s ultimate goal to reunite with Laboon.