I voted for UniSol. Can't say that he looks like a tortured soul here but he brilliantly shows that he is a perfect madman and villain.

I loooove that supermarket scene, and "I'm all ears" is one of my favourite Dolph quotes, if not *the* favourite. He *really* looks mad. He should get more roles like this. Too bad that the villain is never the leading character.
He was also very convincing in Johnny Mnenonic. As I've written before: this interesting contradiction of the soft voice and the violent behaviour is fantastic.
I don't think he was very convincing in Sweepers. It was a good story but he just doesn't look like a guy who drinks too much (same in Jill Rips - I hate it when they try to make him an alcoholic).