Another visitor?
The baddie, who you never actually see during the game, was the outrageously named Elvin Atombender. Every now and again he was start talking to you or ordering his robots to zap you. It was mental. And the funniest part was definitely when you fell down an airshaft and the character would do that hilarious scream.
As a kid I never actually finished the game as it was just too difficult (it really did live up to it's name) but this new Nintendo DS version is easier to control and get to grips with. Impossible Mission is perfect for the handheld console and the new graphics and sound only improve the classic gameplay.
Despite the Gamespot review, there IS a save function.