Phibes was an individual, specifically a man, who functioned as an engineer for the Galactic Empire during the period of the Galactic Civil War.
Phibes' service was with the Imperial Corrections Service, specifically on the Imperial prison barge known as the Purge. He was present on the Purge in 1 BBY when it experienced a malfunction while traveling towards the detainment moon called Gradient Seven. Phibes was chosen to participate in a team that would go from the Purge to the nearby, derelict Star Destroyer named Vector. The purpose was to find replacement components in order to fix the barge. Jareth Sartoris was the leader of the team, which entered the Star Destroyer via a docking shaft. The team then divided into two groups; Phibes joined a group led by Armitage, an Imperial Corrections Officer, along with Quatermass, another engineer, and two stormtroopers. Unfortunately, Phibes and his team were infected by a virus present on the Star Destroyer, which ultimately led to their death.