Because you like Pearl in Steven Universe
Princess Bubblegum is brilliant and determined, but can display a nasty temper. See them in Adventure Time.
Mabel Pines loves sparkles, animals, friendship, and fun. See them in Gravity Falls.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.
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.
Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.
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.
Wendy Corduroy is the ultimate in cool in Gravity Falls. See them in Gravity Falls.
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.
Marge Simpson is a mostly happy housewife and subscriber to Sponge and Vacuum Magazine. See them in The Simpsons.
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.