Because you like White Witch in The Chronicles of Narnia

Green skin, pointy hat, evil cackle—this villain has it all! See them in The Wizard of Oz.

Emma Frost's superpower: transforming her body into an unbreakable diamond. See them in X-Men Series.

James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. 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.

Gilderoy Lockhart's biggest idol is himself. See them in Harry Potter Series.

Dolores Umbridge keeps her villainy hidden (albeit poorly) behind a sheen of sugary pink politeness. See them in Harry Potter Series.

A formerly righteous wizard, Saruman has been corrupted by the forces of evil. See them in The Lord of the Rings.

A smart, spunky, and incredibly skilled gamer, Art3mis has a revolutionary spirit. See them in Ready Player One.

Merciless and manipulative, Queen Ravenna is determined to become the fairest of them all. See them in Snow White and the Huntsman.

A no-nonsense pro, Agent K has dedicated his whole life to his job. See them in Men in Black.

Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.

Christine Palmer is a great surgeon and an even better friend. See them in Marvel Cinematic Universe.