"The Specter" was a bipedal, humanoid assassin droid who operated out of Providence during the Galactic Civil War.
Biography
The droid was described by Colonel Viyenah as an implacable and silent "tenebrous giant." Entirely painted in black, with two red, glowing photoreceptors for eyes, the one that everyone on Providence called "the Specter" had a monolithic and frightening appearance.
Viyenah suspected him to be a 898-type Executioner, one of the first prototype models designed by the Galactic Republic for extremely difficult missions.
Programming
The Specter was a mystery, even for the Providence population. Nobody knew were he hid himself nor what he did most of the time, only realizing his presence when they heard the growl of his internal generator. He appeared sometimes, walking toward a unknown goal, occasionally killing someone. None of the pirates ever tried to stop him, thinking that the victim deserved a divine punishment.
Colonel Viyenah noted in his report to the Emperor that his programming must have been faulty, since no goal could have been determined from his actions.
Behind the scenes
The Specter was created by Jean-Michel Ringuet for the ambiguously canon roleplaying aid "Providence," which appeared in the French magazine Avalon 1. He was illustrated by Jean-Marc Emy.
Sources
"Providence" — Avalon 1 (Unlicensed)