Because you like Chucky in Child's Play
This bite-sized, power-hungry plankton is determined to uncover the secret recipe for the Krusty Krab burger. See them in SpongeBob SquarePants.
Eugene H. Krabs is a greedy restaurant owner who won't let a dime out of the reach of his claws. See them in SpongeBob SquarePants.
Count Olaf is a traveling actor, except he can't act and his homicidal tendencies make finding work pretty difficult. See them in Lemony Snicket's A Series of Unfortunate Events.
Disgust is a friend who makes sure you stay away from all things gross. See them in Inside Out.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.
A monstrous pirate captain, Davy Jones is quite literally heartless. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Louise Belcher might be just a kid, but she can manipulate just about anyone with a pulse. All in the name of fun, of course. See them in Bob's Burgers.
Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.
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.
Bob Parr is an ex-superhero now focused on being a dad, but he misses the action. See them in The Incredibles.
Jessica Rabbit isn't bad. She's just drawn that way. See them in Who Framed Roger Rabbit.