Its appearance is modeled after André Toulon's outfit from "Puppet Master III: Toulon's Revenge". He wears black gloves, a brown jacket with a black undershirt and a black belt.
It's regular head has indented eyes and nose, and the base of its' head seems to resemble the base of a light bulb. It's name seems to reflect the fact he has interchangeable heads, when taking them off would make him decapitate himself.
Not much is known about Decapitron's background, other than the fact he was an unfinished puppet Andre Toulon worked on while he was alive. Decapitron's height and weight are also not revealed in the films as well. Decapitron has the soul of André Toulon, the namesake and creator of the puppets in the Puppet Master franchise.
Unlike the other puppet creations of Andre' Toulon's, Decapitron cannot be activated by having the formula injected directly through a needle. Rather, it has to be activated by the formula combined with an electric current. Also unlike other puppets its activation seems to be temporary.
When activated, its regular morph head can take on the appearance of Andre' Toulon, who gives the current Puppet Master, Rick Myers, advice. It can also project other people's faces and voices as it did with Dr. Jennings. The regular head has been temporarily swapped out for two other heads. One replacement head is similar to a robotic head that echoes robots from 50's science fiction films. When Decaptitron has this head it can project electric currents at enemies. Another head has telescopic and x-ray vision. It is unknown if other heads exist but it seems likely.
It is also seen to be one of the stronger puppets, since it is the only one that can kill the strongest Totem in Puppet Master 4 and Sutekh in Puppet Master 5. Although it only has a brief appearance in both of those films, because it is Toulon, it is also the leader of the puppets who leads the charge to defeat the Totems and Sutekh.
- The puppet "Decapitron" was based on an idea borrowed from an unfilmed 1989 screenplay (titled "Decapitron") by Danny Bilson and Paul De Meo that was to be Empire Pictures' highest budgeted film, prior to the studio's collapse.
- Originally Decapitron's design, basicly looked like Tank, with Toulon's face on the monitor.
- When the puppets bring him alive on the slab it is a tribute to the 1931 movie 'Frankenstein'.