Because you like Emmett Brown in Back to the Future

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

Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.

Humble, caring, and protective, Scott McCall tries to make the best of his newfound status as a werewolf. See them in Teen Wolf.

A good-natured and academically minded superhero, Dan Dreiberg can still get his hands dirty in a fight. See them in Watchmen.

Alex Dunphy's self-reliant intelligence comes with a healthy dash of sarcasm. See them in Modern Family.

Drusilla's hobbies include dolls, music, and killing people. See them in Buffy the Vampire Slayer.

Riggan Thomson is a washed-up movie star running from his inner demons. Alas those inner demons look just like the superhero he used to play. See them in Birdman.

Resourceful and courageous, Chun-Li is dedicated to using her considerable strengths against evil. See them in Street Fighter.

Chaos is what killed the dinosaurs, and there's nothing Jason "J.D." Dean loves more than chaos. See them in Heathers.

Stella Grant is an organized, orderly optimist living with a dangerous disease. See them in Five Feet Apart.

A blood-thirsty warrior on the battlefield, Ragnar Lothbrok is a dedicated family-man at home. See them in Vikings.