Because you like Yoshi in Super Mario Bros.

Jenna Rink is physically 30 but emotionally 13. She has a better excuse than most. See them in 13 Going on 30.

Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.

Susie Salmon has a big heart, even though it's not beating anymore. See them in The Lovely Bones.

Robin Scherbatsky is a former teen pop star who loves dogs and is scared of relationships. See them in How I Met Your Mother.

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

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

D.J. Tanner is a rebellious teen who wishes her lame dad would butt out of her personal life. See them in Full House.

Though he has a brilliant mind for mathematics, Christopher has a much harder time processing the rest of the world. See them in The Curious Incident of the Dog in the Night-Time.

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

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

Deadpool thinks life is an endless series of train wrecks with only brief commercial-like breaks of happiness. See them in Deadpool.

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