Trivia: When Joey's television set is flipping through the channels all by itself, on one of the channels is an interview with Tony Hickox, the director of the film.
Trivia: The barman at The Boiler Room, and the subsequent cenobite he turns into ("Barbie"), is played by Peter Atkins, the film's screenwriter, in a small supporting cameo role. (Albeit his voice was dubbed over by the director, since Atkins wasn't around during looping, kind of making it a two-part cameo).
Trivia: "Gremlins" star Zach Galligan has a "blink and you'll miss it" cameo as one of the dead bodies in the nightclub after the massacre. He's only on-screen for a second, but if you know where to look, you can see him. (He's impaled with a pool stick.) Evidently the director asked him to make a cameo as they had worked together before on the "Waxwork" films, and Galligan accepted.
Chosen answer: It's a piston. 2 piston rods are jammed through his head and they move powered by something unknown. You can see the crank shaft and part of some sort of cylinder. A piston is part of an internal combustion engine. It's part of his cenobite form since he liked cars.
lionhead