Because you like Izzie Stevens in Grey's Anatomy

Keeping your cool is just as useful in the underworld as in war, and Michael Corleone is stone-cold. See them in The Godfather.

An undercover DEA agent, Max Payne is too focused on avenging the past to plan for the future. See them in Max Payne.

A suave demon, Crowley grants humans their wishes in exchange for their soul, only to find loopholes that benefit him. See them in Supernatural.

Bucky Barnes used to be a good-hearted American soldier. Now he's the cold-hearted Winter Soldier. See them in Marvel Cinematic Universe.

If Lisbeth Salander can hurt a bastard who deserves it by digging up stuff about him, she feels good. See them in The Girl with the Dragon Tattoo.

Luis is a deliverer of silver linings and long-winded stories. See them in Marvel Cinematic Universe.

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

A level-headed show business icon despite his amphibian status, Kermit is the brains behind the success of the Muppets. See them in The Muppet Movie.

V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.

While Jay Gatsby doesn't necessarily like to attend his parties, he knows how to throw a world-class bash. See them in The Great Gatsby.

Damon Salvatore used to miss being human. Now he can't think of anything more miserable. See them in The Vampire Diaries.