Because you like Davy Jones in Pirates of the Caribbean: the Curse of the Black Pearl
A formerly righteous wizard, Saruman has been corrupted by the forces of evil. See them in The Lord of the Rings.
Ursula will oh-so-generously grant your wishes for a price. See them in The Little Mermaid.
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.
White Witch's heart is as frozen as the land she rules. See them in The Chronicles of Narnia.
Green skin, pointy hat, evil cackle—this villain has it all! See them in The Wizard of Oz.
Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.
Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.
Baloo is a fun-lovin' bear who just needs the bare necessities of life See them in The Jungle Book.
Buddy Pine is an unhinged superfan of superheroes using technology to take down his idols. See them in The Incredibles.
The fearless bodyguard of Rick Flag, Katana will ruthlessly kill her enemies, trapping their souls in her sword. See them in DC Extended Universe.