Well, he had longish, curly, green hair, and lots of muscles in Collision of the Planets. Then he was taken over by an alien computer in The Cave of the Wizards.... looking kind of silveryish. I guess in my Lost in Space world he can have strange ears. That is not the Jupiter 2 in the background.
This is part of the picture I drew while waiting for my car one morning. I plan to do it over in watercolor but I forgot about it... while I am doing art it is mostly lots of cats, I have been working on some art for a kids book.