I'm the blackest villain of all time.
There were a number of people who helped me get there, and the one I always mention is Michael Byrne, the great master swordsman and brilliant stunt double.
If you got the DVD you can see that George Lucas has taken that person out, as well as the voice, and we shot this scene when we arrived in Australia during the actual filming of Episode 3.
But he did say that the character would be on the sidelines in movies One and Two, and move into the middle with number Three, but I didn't realize he would move in with quite such a bang.