Because you like Pearl in Steven Universe
Princess Bubblegum is brilliant and determined, but can display a nasty temper. See them in Adventure Time.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.
Mabel Pines loves sparkles, animals, friendship, and fun. See them in Gravity Falls.
Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.
For Wreck It Ralph, it's not easy being the bad guy. Especially when you've been designed to destroy but really desire love. See them in Wreck-It Ralph.
Driven and straightforward with high-technology parts, EVE was sent to Earth to see if it is habitable. See them in WALL-E.
A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.
This lab mouse has one thing on his huge brain: trying to take over the world on a nightly basis. See them in Pinky and the Brain.
Wendy Corduroy is the ultimate in cool in Gravity Falls. See them in Gravity Falls.
Marge Simpson is a mostly happy housewife and subscriber to Sponge and Vacuum Magazine. See them in The Simpsons.
In a rag-tag group of kids determined to take down the imperialistic Fire Lord, Katara is the glue that holds them together. See them in Avatar: The Last Airbender.
Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.