Pistonhead

Pistonhead was a Cenobite who appeared in the 1992 horror movie Hellraiser III: Hell on Earth.

Description
Like the other Cenobites, Pistonhead was a severely mutilated human who dressed in black leather garments and was possessed of an evil nature. His most distinguishing feature, however, was the pair of pneumatic pistons which constantly activated back and forth through his skull.

History
Once a human named J.P. Monroe who killed his family in order to gain access to their inheritance, Monroe was an evil individual in life.

A collector of morbid pieces of artwork which he kept in his luxury apartment above his nightclub The Boiler Room, Monroe came into possession of The Pillar of Souls, a creation which held the Cenobite Pinhead captive. At first believing it to be nothing more than another piece of disturbing sculpture, Monroe was at first shocked, then beguiled, by the fact that it actually held a demon in its confines. Over the next few days, Monroe fed unsuspecting mortals to Pinhead, increasing his power, but not quite allowing him the strength to escape his prison.

After attempting to feed his ex-girlfriend, a woman named Terri, to the Pillar, the tables were turned when Terri knocked Monroe unconscious and, seduced by Pinhead’s promises, instead fed the man to the demon. This act fully awakened Pinhead and he broke free, turning The Boiler Room into a slaughterhouse and creating several new Cenobites, one of whom was Monroe himself, now known as Pistonhead.

After Pinhead and his new cohort pursued a young reporter named Joey Summerskill through the streets in an effort to claim the Lemarchand’s Box, the only artefact capable of defeating them, the Cenobites confronted Joey on the construction site of a new high-rise tower block. There, Pistonhead and the others tormented Joey for a time, before she was able to activate the Box, and in doing so sent the Cenobites - Pistonhead included - straight to the Hell of the Labyrinth.