Board Thread:General Discussion/@comment-68.40.52.75-20130326004018/@comment-17759128-20140402131150

Torresp wrote: Vilgax no matter what. Vilgax was able to scam Diagon, a GOD LIKE ENTITY, and was even able to send the Incurseans packing

If you think about it, the ben 10 series is never the same without Vilgax appearing Yeah, and then he got defeated by Ben. I think it's Charmcaster, since she actually managed to kill Ben, and he would have stayed dead if Spellbinder hadn't refused to have new life.