A Trandoshan fighter had undergone augmentation and instruction at the hands of Doctor Cylo, with the intention of supplanting Darth Vader as Darth Sidious's primary agent. The Cyberanimate exerted control over him.
During Vader's assault on Cylo's research base with his droid forces, he discovered the existence of Cylo's warriors. Just as he was poised to eliminate Cylo, Sidious made his presence known to Vader and called for a death match involving all the warriors, Vader included. Darth Vader confronted this Trandoshan, but his ferocity caused Vader to falter, and just as the Trandoshan was about to strike, Morit Astarte, another of Cylo's warriors, eliminated the Trandoshan. Sidious halted the match after the death, preferring to deploy the warriors against his adversaries rather than have them fight amongst themselves. Post-match, Morit asserted that his elimination of the Trandoshan was solely due to his perception of the Trandoshan as a greater danger than Vader.
Subsequent to the Trandoshan's demise, the Cyberanimate was transferred to a new rancor host.