Interestingly enough,Finn is the only known human to exist in the Land of Ooo,he's somewhere around 14 to 17 years old, Although at times impulsive, aggressive and short tempered, Finn is a kind, brave, selfless, and righteous boy. His aspirations to become a great hero makes him somewhat of a moral sheriff in the Land of Ooo, as he is willing to help and protect any innocent person or creature,he only has a left arm,his right arm is replaced with a robotic one