Who would be your favorite YA villain? It could be anyone from Voldemort from the Harry Potter series, Valentine from The Mortal Instruments, or even President Snow from The Hunger Games. It could be a lesser known villain or even the most popular one. Who strikes you as the most scary - the most terrifying? When something goes bump in the night, who do you hope it isn't making that noise?
Just for curiosity's sake... And because I think villains are by far the most interesting characters of them all. A story may seem like it depends on the hero but to me, it would all fall apart without the all encompassing villain.
So, if you could pick a villain (any one from any book), who would it be?