Because you like Lisa Cuddy in House M.D.

Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.

SpongeBob SquarePants lives in a pineapple under the sea. Absorbent and yellow and porous is he. See them in SpongeBob SquarePants.

Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.