Because you like Victor von Doom in Fantastic Four
Count Olaf is a traveling actor, except he can't act and his homicidal tendencies make finding work pretty difficult. See them in Lemony Snicket's A Series of Unfortunate Events.
Claire Temple is a dedicated nurse providing secret care to New York's vigilantes. See them in Marvel Cinematic Universe.
The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.
King Schultz is about as color-blind as a man of his era can be. See them in Django Unchained.
Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.
A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.
Michaelangelo is an above-ground crime-fighter by night, and a pizza-eating, sewer-dwelling mutant ninja turtle by day. See them in Teenage Mutant Ninja Turtles.
Kesuke Miyagi is a karate expert who thinks the best way a scrawny high schooler can learn how to defend himself is by washing every surface in sight. See them in The Karate Kid.
A reclusive introvert, Liz Sherman has a temper that's literally lethal. See them in Hellboy.
A cursed pirate captain, Barbossa is greedy, vengeful, and surprisingly cheeky. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Pure charm, flirty and fashionable, Lando Calrissian will make sure to get the job done when necessary. See them in Star Wars Series.