An Island Whale that blocked the Merry Go's progress after she passed the Red Line. Enraged after the bow of the ship broke off, Luffy attacked the whale, who then counterattacked and swallowed the entire ship whole.
Remain standing even after sustaining an attack as long as HP is above a certain level (above 50%) The protection only works when attacked by one single enemy and will leave the team with at least 1 HP; the effect will not work when attacked by multiples enemies at once.
Laboon is most often referred to in Vivi/Laboon 'zombie' teams. He's easily farmable and a great zombie captain to tank large hits and not die. See the Loss Prevention category for a list of characters and further explanation of the skill. Zombie team strategy is explained at Tips for New OPTC Players and Roadmap.
Some people prefer to use unevolved Laboon in zombie teams, to reduce the total amount of HP a team has.
This character may be needed for missions on his story island, but currently it is unknown when, if ever, such missions will be released.