Sgt Charlie Hacker, is the mess Sergeant for Bravo Co. He & Gunnery Sergeant Carter are always in competition with each other in one shape or another. They have even betted on who would take Pfc Pyle. He was portrayed by Allan Melvin.
- Despite being addressed as 'Sergeant' (NATO Code E-5.), Hacker actually holds the rank of Staff Sergeant (NATO Code E-6.).