Because you like Sam Weir in Freaks and Geeks
Norma Bates may look like a harmless housewife, but don't let that fool you. See them in Bates Motel.
Mystique is a shape-shifting mutant who, after too many disappointments, does not want to co-exist with humans. See them in X-Men Series.
Make sure not to anger the Hulk or else he will transform into a giant green monstrosity and smash anything in his way. See them in Marvel Cinematic Universe.
Finn pulled off the impossible: he quit life as a Stormtrooper. Unfortunately, life only got more complicated after that. See them in Star Wars Series.
Imperator Furiosa is a badass patriarchy toppler. She'll do anything to secure a better, freer future for the women she cares for. See them in Mad Max: Fury Road.
Did he ever tell you the definition of insanity? Just wait, and this psychopath will do just that. See them in Far Cry 3.
World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.
Ava may just be the perfect woman. So long as she can pass a Turing test. See them in Ex Machina.
Effortlessly sexy, calm, and collected, Eric Northman is equally at home ripping off heads and flirting with waitresses. See them in True Blood.
Teddy Sanders loves his frat brothers so much he might never leave school. See them in Neighbors.
A natural leader, Clarke Griffin dispenses both justice and mercy, and she does it all while being selflessly humble. See them in The 100.