- "TK-421, why aren't you at your post? TK-421, do you copy?"
- ―Treidum attempting to contact TK-421
Treidum was a male human who served the Galactic Empire as a Lieutenant during the Galactic Civil War against the Alliance to Restore the Republic. During the war, he was stationed on board the Death Star battle station. After the YT-1300 light freighter known as the Millennium Falcon was pulled aboard the Death Star by tractor beams and searched, Tredium noticed from his security station that the stormtroopers who were supposed to be guarding the starship were not at their posts. The Lieutenant attempted to contact one of the troopers, TK-421, but could not raise him on comm. The trooper then emerged from the ship and signalled to Treidum that his helmet was malfunctioning. Treidum opened the doors to the station in order to get the communicator replaced, but found Luke Skywalker and his companions waiting outside. Skywalker shot Treidum and killed him in order to use the security station to locate Princess Leia Organa onboard the battle station.
- Star Wars: Episode IV A New Hope (First appearance)