Alright..
I love the way this looks, but as the series goes I think you should continue doing it how you've been doing it. As a previous poster said that the great thing about Mastermind was that he looked evil, and serious, and generally a well mastermind, but you actually find out he's really stupid. So matching an appearance to his personality would be a little predictable and not as funny.
The picture itself is wonderful and I love it. :]