Because you like Sheldon J. Plankton in SpongeBob SquarePants

Born and raised in the darkness, Bane is determined to have the city totally under his control so that he can demolish it. See them in DC Extended Universe.

Kesuke Miyagi is a karate expert who thinks the best way a scrawny high schooler can learn how to defend himself is by washing every surface in sight. See them in The Karate Kid.

Jessica Rabbit isn't bad. She's just drawn that way. See them in Who Framed Roger Rabbit.

Angela Martin is uptight and puritanical, outside of the affair she's having with a co-worker. See them in The Office.

Velma Dinkley is all about getting results, not taking credit. She is the unsung hero of Mystery Inc. See them in Scooby-Doo.

A sarcastic and nosy tomboy, Stephanie Tanner is understandably not crazy about being the middle child. See them in Full House.

A no-nonsense pro, Agent K has dedicated his whole life to his job. See them in Men in Black.

Princess Bubblegum is brilliant and determined, but can display a nasty temper. See them in Adventure Time.

An inter-dimensional demon, Bill Cipher dreams of a more chaotic Gravity Falls. See them in Gravity Falls.

Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.

A grumpy tourist trap owner, Grunkle Stan has a few deep secrets. See them in Gravity Falls.

Popular jock Andrew Clark is pretty bizarre. He's just better at hiding it, that's all. See them in The Breakfast Club.