20. Michael Myers
19. T-1000
18. Freddy Krueger
17. Agent Smith
16. Norman Bates
15. Palpatine
14. The Sheriff of Nottingham
13. Nurse Ratched
12. Sauron
11. Gollum
10. The Alien (the Xenomorph from the Alien films)
9. Voldemort
8. Anton Chigurh
7. Kylo Ren
6. Hans Landa
5. Hannibal Lecter
4. Hans Gruber
3. Loki
2. The Joker
1. Darth Vader
https://www.empireonline.com/movies/features/best-movie-villains/
The list was made up of submitted votes, and it's no surprise Darth Vader is in the top spot. The rich legacy behind Star Wars, James Earl Jones' iconic work for the voice, and Vader is one of the more talked about picks for representing pure evil.
Voldemort is by far one of my favorite all time villains, but I always thought he was more evil in the movies and the books as Tom Riddle. I always think back to that scene in The Chamber Of Secrets, where he reveals his plan to Harry, and it's one of the reminders for just how far he was willing to go to become Lord Voldemort.
I know it's only two spots, but Myers should be ahead of Krueger. Halloween and A Nightmare On Elm Street have their share of awful sequels, but they turned Freddy into a full blown jokey and cartoonish villain with corny one-liners after Dream Warriors (to be fair, you could see signs of it in Freddy's Revenge), while Michael was still able to maintain some of the dark mystique as an unstoppable killing machine.
And I know it's a stretch, because his screen time might add up to ten minutes, but I would find a way to squeeze in rich Biff from the alternate 1985 in Back To The Future II. It's the only film, where Biff was more than a pesky and obnoxious bully. Rich Biff was a greedy womanizing asshole, who turned Hill Valley into a trashy hellhole, and he wanted to make sure he always had complete control over Lorraine.