In today's generation, each and everyone watches series/movies but most of them are interested in supernatural/sci-fci/horror things.
Here are some of the name of some villains from the popular series/movies.
1. Klaus Mikaelson
Klaus is an original vampire/werewolf (a hybrid) who's Both a villain in the series The Vampire Diaries (series) and a hero in the spinoff series The Originals. He's character is portrayed by Joseph Morgan. His character is famous for his murderous and flirty behaviour with his female victims before killing them. Being an original vampire he was inevitable, he could not be killed by staking a dagger on his heart but only with an white oak stake. He also wanted to make more hybrids like him and for that he wanted a doppelganger, he wanted to create more hybrids because he felt lonely as being a rare(one and only) supernatural creature. He got bethroned of his villainous title when his daughter Hope Mikaelson was born which was a token of hope and love for him for his family and finally he could opt for his family's slogan 'Always and forever'.
2. Faustas Blackwood
He's a villain in the series Chilling Adventures Of Sabrina.He is portrayed by Richard Coyle.
He is the former High Priest of the Church of Night fleeing after refusing the Dark Lord's order of bowing down to Sabrina Spellman and poisoning the entire Coven.
He bewitched Sabrina's aunty Zelda after marrying her and orders her to follow sach and every instructions of him and act as an typical housewife. He made Sabrina's life a hell, with his lies and tortures. He never accepted Prudence as her own biological child. He was the reason for the rise of the Eldritch terrors on Greendale and due to that Sabrina Spellman/Morningstar sacrificed her life in order to save her family and friends.
3. Freddy Krueger
The Nightmare On Elm Street series (1984-2010)
He's basically a ghost who was a serial killer when he was alive and he used to kill children.
The signal when he was coming was described as-
“One, two, Freddy’s coming for you... Three, four, better lock your door...”
This haunted movie consists of 9 parts. In each and every part he comes again and again even after being banished and killed by Jason on the movie Freddy v/s Jason (August 15,2003). Though being a ghost he comes and haunts/ kills brutally his victims in thier dreams.