Hades is my favorite! Even though they portray his motives incorrectly. Hades isn't the bad one in Greek Mythology. In the movie, he releases Kronos which he would NEVER do. The gods and goddesses wouldn't release the titans. Though honestly, it's a cool movie.
Gaston is definitely my favourite Disney villain - I guess he is the scariest, in a way. ;) I am OBSESSED with Beauty and the Beast!!!