Forum:Best villain?

Who do you think was the best or most effective villain in Yugioh, not necessarily because of their dueling skills.

I believe Yami Marik (from the Japanese version) takes the cake. I mean he didn't even really want anything other than to cause chaos and destruction. He wins quite a bit of duels in the story, and he tried to kill people with his Millenium Rod dagger. Yami Bakura is a close second