Because you like Yoshi in Super Mario Bros.

Fox Mulder is a devoted believer in aliens, monsters, and that the truth is out there. See them in The X-Files.

Tiffany Doggett is usually a nice, good Christian. Just don't get her riled up! See them in Orange Is The New Black.

Henry Mills is an idealistic young boy with the heart of the truest believer. See them in Once Upon a Time.

Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.

Cisco Ramon is a proud, enthusiastic member of a superhero support team. See them in DC Extended Universe.

Part of an elite team of investigators, Abby Sciuto is the happiest Goth to ever work in law enforcement. See them in NCIS.

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

Sheldon Cooper is brilliant in every way except, well, interacting with any human being. See them in The Big Bang Theory.

Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.

Jade Jade Harley might not be the best at reading social cues, but her bravery and selflessness means she's a great friend to have. See them in Homestuck.

An intriguing bundle of contradictions, Sawyer Ford trusts no one on the island, and no one should trust him. See them in Lost.

He's an eccentric pirate making it up as he goes along. He's Jack Sparrow, savvy? See them in Pirates of the Caribbean: the Curse of the Black Pearl.