[Protoclown]

Well, my friend asked him why it wasn't his face behind Darth Vader's helmet, and Prowse started going off about how much of an asshole Lucas was and that he WAS Darth Vader and that he wasn't the face of Anakin because Lucas didn't want him to have any power and he had this really intense scary look in his eyes like he was going to snap our necks...so yeah, I'd say he was bitter.