Jason Vorhees is up there in my favorites. Those films are some of my favorite slashers, and the first films that got me into horror. So many different things have been done with him too, not sure if this is really good or bad, but at least it stops him from getting completely stale as a character. Oh he's a deformed boy in a lake, oh wait no he's an indestructible killer in a hockey mask, oh actually my bad he is actually a worm-like alien that is able to be translated through people.
I also really like Norman Bates in Psycho, and although I'm not exactly sure where I would place him in a list he would be somewhere in the top 10, if not top 5. He was just a unique character, and the scene where he is in his little costume is unforgettable.
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