Because you like Leonard Hofstadter in The Big Bang Theory

World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.

John Bender's interests include marijuana, fighting, and breaking the rules. See them in The Breakfast Club.

It's easy for Brian O'Conner to fake his way into the world of extreme racing because he's been popping cars since his teenage years. See them in The Fast and the Furious.

Chuck Bass is notorious for his flamboyant sense of style and love of partying. See them in Gossip Girl.

After figuring out how both the light and dark halves of his soul could co-exist, Jak is maturing into a real hero. See them in Jak and Daxter.

Michaelangelo is an above-ground crime-fighter by night, and a pizza-eating, sewer-dwelling mutant ninja turtle by day. See them in Teenage Mutant Ninja Turtles.

Billionaire playboy by day and vigilante archer by night, Oliver Queen aims to rid Starling City of crime and atone for his past mistakes. See them in DC Extended Universe.

When the going gets tough, Rick Grimes gets tougher. It's a very useful trait when the world goes to hell. See them in The Walking Dead.

There's never a dull moment when this mischievous high-schooler gets up to his hijinks. Save Ferris! See them in Ferris Bueller's Day Off.

Ava may just be the perfect woman. So long as she can pass a Turing test. See them in Ex Machina.

Sarah Kerrigan is pretty much the Queen Bitch of the Universe. See them in StarCraft .

A benevolent madman with a blue box, The Doctor is traveling through time and space to heal the wounds of the universe. See them in Doctor Who.