Game Viet Nam

Gemini the Wizard here is one of the few badguys to live long enough to tangle with Thundarr the Barbarian in two different episodes.  I love the wizards in the world of Thundarr.  Almost all of them are mutated techno-monsters who left their humanity behind long ago.  Gemini's particular deal is that he has two faces and a spinning neck.  Most of the time you can deal with the friendly, benevolent, soft-spoken face.  But piss him off and his head rotates 180 degrees and the angry, yelling, zap-you-with-eyebeams persona emerges.

Sniderman has D&D type stats for Gemini over at The Savage AfterWorld.