Because you like Frederick Frankenstein in Young Frankenstein
There is never a dull moment with Jim Moriarty: expect booze and sing alongs in between all of the homicide. See them in Sherlock.
Joe Goldberg works at a local bookstore and charms most girls sock's off. He is also a serial killer, but no one is perfect! See them in You.
Captain Spock is on a five-year mission exploring the final frontier and boldly going where no man has gone before. See them in Star Trek.
Brilliant, violent, and only a little insane, the Joker doesn't listen to anyone except the voices in his head. See them in DC Extended Universe.
It's time somebody has to take over. It might as well be Fish Mooney. See them in Gotham.
A gruff and hardened professional, Marcus Fenix keeps his emotions buried deep. See them in Gears of War.
A crooked cop, Harvey Bullock is the product of a not-so-just criminal justice system. See them in Gotham.
This beautiful aesthete wins the hearts of both ladies and men. But Dorian Gray also happens to have his soul sealed in a painting. See them in Dorian Gray.
Hanna Marin is a determined girl defined by her ability to transform herself. See them in Pretty Little Liars.
Tracy Turnblad's got rhythm, and she's determined to share her dance moves with the world. See them in Hairspray.
Everyone is just a chess piece, and Izaya Orihara is a master player. See them in Durarara!!.