List of my Favorite Villain's:
Lord of the rings
-Morgoth
-Saron
-Saruman
-Smaug
-Shelob
Harry Potter
-Voldemort
-Bellatrix Lestrange
- Lucius Malfoy
-The Dementors
WoW
-Arthas/Lich king
-Gul'dan
-Sargeras
-Illidan stormrage
-deathwing
-Xavius
-Mannoroth
-headless horseman
-Teron Gorefiend
-Associate Professor Evil
-Grand Apothecary Putress
Marvel comics
-Magneto
-Apocalypse
-Loki
-Sabretooth
-Galactus
-Venom
-Doctor Doom
-Carnage
-Mystique
-Ultron
-red skull
-Lizard
-Mr.sinister
-Morbius
DC comics
-Joker
-scarecrow
-Bane
-Riddler
-mr.Freeze
-Ra's al Ghul
-Deathstroke
-Darkseid
-Brainiac
Stargate SG1
-Anubis http://stargate.wikia.com/wiki/Anubis
-Ba'al http://stargate.wikia.com/wiki/Ba%27al
-Sokar http://stargate.wikia.com/wiki/Sokar
-Ori http://stargate.wikia.com/wiki/Ori
-Replicator http://stargate.wikia.com/wiki/Replicator
-Human Form Replicator
Stargate Atlantis
-Wraith
-Ellia:Iratus bug retrovirus Enhanced dna http://stargate.wikia.com/wiki/Ellia
Austin Powers
-dr.Evil
Star wars
-Darth Maul
-Darth Vader
-Emperor palpatine
-Boba Fett
-General Grievous
-Dooku
-Jabba
-Shebulba
-Nexu
Mortal Kombat
-Quan Chi
-Shao Kan
-Shang Tsung
-Baraka
-Kano
-Sheeva
-scorpion
-Zombie Liu Kang
ALL IN NO PARTICULAR ORDER! Just some of my favorite villains off the top of my head.