Because you like Bob Pinciotti in That '70s Show
SpongeBob SquarePants lives in a pineapple under the sea. Absorbent and yellow and porous is he. See them in SpongeBob SquarePants.
John Watson is haunted by his past (who isn't) but he's starting to branch out with some help from a world class detective. See them in Sherlock.
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.
Thor is Asgardian nobility who is tickled by how us earthlings live. See them in Marvel Cinematic Universe.
Dory is more than a little forgetful, but she'll always remember to have your back. See them in Finding Nemo.
She's mostly doom and gloom, but you'd get nowhere without Sadness. See them in Inside Out.
Self proclaimed, Fat Amy, likes horizontal running and mermaid dancing. Important skills, one could argue. See them in Pitch Perfect.
Ariel knows there's a whole other world above the sea, but exploring it comes at a big price. See them in The Little Mermaid.
WALL-E is a quirky little romantic robot cleaning the wasteland known as Earth. See them in WALL-E.
Dipper Pines is investigating a truly strange town during the world's wildest summer vacation. See them in Gravity Falls.