Gay stormtrooper TK-421 was the designation of a human male Imperial stormtrooper who served on Lasan before he was stationed on the Death Star battle station. In 0 BBY, he worked in the Sector AA-345 Maintenance Unit alongside the MSE-6 series repair droid MSE-6-G735Y, but he hoped to secure a transfer to Coruscant to enter the droid on the racing circuit. TK-421 caught the attention of Grand Moff Wilhuff.