Because you like Javert in Les Miserables
Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.
A monstrous pirate captain, Davy Jones is quite literally heartless. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.
Call her. Beep her. If anyone's in trouble, Kim Possible is there. See them in Kim Possible.
There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.
Green skin, pointy hat, evil cackle—this villain has it all! See them in The Wizard of Oz.
This lab mouse has one thing on his huge brain: trying to take over the world on a nightly basis. See them in Pinky and the Brain.
This master marksman may be a villain, but Deadshot's motives aren't quite as selfish as they seem. See them in DC Extended Universe.
One of the best in the magical world, Mad-Eye has the battle scars to prove his dedication to such a dangerous job. See them in Harry Potter Series.
Extremely violent and loyal, Sandor Clegane is called the Hound for a reason. See them in Game of Thrones.