Unidentified master gunnery sergeant

The unnamed Master Gunnery Sergeant, or "Master Guns" is in charge of Cairo Station's armory and was a non-commissioned officer. He helped the Master Chief get used to his new Mark VI armor by testing his suites diagnostic, HUD, and his shields. He was killed soon after by two Elites as Covenant forces invaded the station(Note: He was wielding the only shotgun in the level against them). He was voiced by R. Lee Ermy in Halo 2, and has made no further appearances since his death.

Confusion over rank
There has been a great deal of confusion regarding this character's name and rank. In The Armory (Level), he is referred to as "Master Guns" by Sergeant Major Johnson. Many interpreted this as him being a Master Sergeant with the last name "Guns". However, "Master Guns" is an informal address for a Master Gunnery Sergeant, and the character's name is not known. In articles he is often referred to as the unnamed Master Gunnery Sergeant; the Armory's Master Gunnery Sergeant; or "Master Guns" (only if a direct quote from the game).

Quotes

 * "So, Johnson when you gonna tell me how you made it back home in one piece?"


 * "Pfft, my ass! Well you can forget about those adjustments to your A2 scope! And you're sure to-"


 * "Get the hell out of my armory split-lip, OH GOD!"


 * "His armor's working fine, Johnson, so shut your chili-hole!"


 * "Come on now is that a weapon or a flashlight!"
 * "Look, just because the brass kisses your ass doesn't mean I will!"


 * "Just what this place needed: a couple of real live targets!" (In Co-Op)"


 * "Call your friends, I got enough ammo for all of 'ya!"


 * "Oh God!!"

Trivia

 * If the player waits underneath the armory away from the stairs before entering it the Gunnery Sergeant is invincible. He will hold off the two Covenant Elites but he cannot kill them and will die as soon as the player enters the armory.