A boxy, slow-moving mechanical henchman from Tom Paris's Captain Proton holodeck programme, built in the style of 1930s film serial robots and seen in several Voyager episodes.
Satan's Robot is a holodeck character in The Adventures of Captain Proton, the retro science-fiction serial that Tom Paris enjoys aboard Voyager. A clanking metal figure with a grille for a face, it serves the villain Doctor Chaotica and announces its intentions in a flat mechanical voice.
It first appears in Night, where Seven of Nine, unimpressed by the fiction, simply disables it. It returns in Bride of Chaotica!, in which Paris repairs it and it blunders about warning of invaders during the confrontation with the photonic aliens.
The robot is seen once more in Shattered, when Chakotay and Janeway pass through a part of the ship stuck in the time of the Chaotica programme.