I always like the villain.... That's why I am Loki! Satan is a cool guy, the Master is Awesome, Moriarty is wonderfully insane, Smaug is Benedict- Benedict trumps all wrong doings, Khan gets the same trump card as Smaug, Voldemort and had a bad childhood, Morgana is just BA, Greed is very loyal (even with memory loss), Team Rocket isn't brave enough to disobey orders, Sesshomaru just doesn't know how to be a good older brother, On the other hand Prussia is a great brother.. kind of... don't ask Germany for his opinion, Azula let the power go the her head, Bishup really did care about Aidan, Rumple Stiltskin isn't evil just cursed and Magneto was in a flipping concentration camp! 

(Other fandoms I am in that a couldn't find my favorite villain for are: Glee, Attack on Titan, Arrow, Maze Runner, Soul Eater, Fairytale, any thing that has Dick Grayson in it and Ouran Highschool Host Club.)