The Hidden Enemy
In 22 BBY, the Confederacy of Independent Systems sent the Droid armies of the Retail Caucus, led by Whorm Loathsom, to besiege the planet Christophsis. When Republic forces attempted to establish a forward position, TJ-55 was sent to remove their presence. Jedi Generals Obi-Wan Kenobi and Anakin Skywalker prepared an ambush for the advancing droid forces, but TJ-55 had been informed by a Republic traitor of the Republic's exact location and swiftly routed the Clone Troopers, forcing them to retreat to the roof of the southern tower.
TJ-55 led a force to the roof to finish off the troops, but as the Jedi and Clones evacuated, trooper Gus ripped his head off in order to learn how the Separatists knew of their plans.
- The Hidden Enemy (First appearance)