Because you like Dipper Pines in Gravity Falls
Steven Universe is an excitable youth who likes junk food and trying to save the world. See them in Steven Universe.
Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.
A level-headed show business icon despite his amphibian status, Kermit is the brains behind the success of the Muppets. See them in The Muppet Movie.
SpongeBob SquarePants lives in a pineapple under the sea. Absorbent and yellow and porous is he. See them in SpongeBob SquarePants.
Tina Belcher is on the cusp of puberty, and she has no shame when it comes to boys, butts, and brassieres. See them in Bob's Burgers.
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.
If you hang out with Bender in cool dive bars in 31st century New York, make sure you're on his "Do Not Kill" list. See them in Futurama.
A courageous boy robot, Mega Man is dedicated to achieving everlasting peace. See them in Mega Man.
Korra is stubborn, outgoing, and faced with huge responsibilities she might not be ready for. See them in The Legend of Korra.
All the world's a stage, and Missy Piggy's never one to give up the spotlight. See them in The Muppet Movie.
Wario is greedy, gross, and gluttonous. See them in WarioWare.
Meat Boy tenaciously throws himself into danger, and when he fails, he immediately gets back up and tries again. See them in Super Meat Boy.