Because you like Athelstan in Vikings

In the simplest terms, in the most convenient definitions, people consider Brian a nerd. But he's more than that. See them in The Breakfast Club.

Mitchell Pritchett prefers to have a place for everything and everything in its place. See them in Modern Family.

Breaking bones and hearts, Callie Torres has figured out how to put the bones back together. But the hearts? Not so much. See them in Grey's Anatomy.

Velma Kelly will do anything to get the limelight back. See them in Chicago.

Awkward and anxious. It's not easy being Meg Griffin. See them in Family Guy.

Beautiful and artistic, Aria Montgomery follows her own path. See them in Pretty Little Liars.

A singing nanny, Mary Poppins is practically perfect in every way. See them in Mary Poppins.

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

In Dennis Reynolds' mind, only a psycho wouldn't have a six-part system to bring home women. And he should know. See them in It's Always Sunny in Philadelphia .

Alyssa Foley is a blunt and crass teenage runaway. See them in The End of the F World.

Ezio Auditore Da Firenze is a little short-tempered, a lot fun-loving. See them in Assassin's Creed Series.

Catwoman might be slightly unhinged, but you can't say this feline villainess isn't confident. See them in DC Extended Universe.