CT-6/774, also known as Seven-Four, was a clone trooper auxiliary heavy-weapons specialist who served as a turret gunner on a LAAT/i. His LAAT/i was stationed on Halleck immediately prior to the Battle of Haruun Kal. Seven-Four was commanded by clone trooper lieutenant Four-One and 2nd Lieutenant CL-33/890, and worked alongside his fellow Auxiliary Heavy-Weapons Specialist and gunner CT-014/783.