Because you like Hawkeye Pierce in M*A*S*H

Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.

Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.

A wildly brilliant detective, Sherlock Holmes can figure out everything except how to interact with other human beings. See them in Sherlock.

After Otto Octavius' accident, he becomes fixated on finishing the reactor at any cost. See them in Marvel Cinematic Universe.

Harry Potter is the boy who lived! See them in Harry Potter Series.

Though seemingly caring and calm, this motel owner has a mysterious streak of intensity. See them in Psycho.

Sam Roth is sensitive, musically gifted, and scarred by his past. See them in Shiver .

David Rossi may chase serial killers for a living, but he's more interested in what wine pairs well with tonight's parmigiana. See them in Criminal Minds.

Walter White's knowledge of chemistry allows him to cook astoundingly pure meth, leading to a rapid – albeit tumultuous – rise in the criminal drug world. See them in Breaking Bad.

While his twin tries to save lives, Millions Knives does the best to end them. See them in Trigun.

Zeratul is cryptic, mystic, and not to be messed with. See them in StarCraft .

Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.