Paladin Gunny was involved in Elder Lyons' original expedition to the Capital Wasteland. He is in charge of training initiates and turning them into hard-nosed Knights and Paladins. He is unhappy with Elder Lyons's method of taking on volunteers from the wasteland, but still performs his duty to the best of his abilities.
If permission is granted by Elder Lyons, Gunny can train the Lone Wanderer to properly use and wear power armor. However, Gunny does not like it as he clearly states, "Yeah, I can train you. But don't ask me to like it. My initiates sweat blood, and you just get a free pass?"
He has a low opinion of the Enclave and their tactics, and will readily voice these opinions if inquired about them.
"I am charged with the duty of turning these maggots into Brothers of Steel. With the threat of the Enclave, they're likely going to be pressed into service before they've taken the oath. So, I've got a lot of work to do."
pcps3 Sometimes, when talking to him, the subtitles will say, "Nothing to report here," but he will say, "We've got this area locked down." This can also happen to unnamed Brotherhood of Steel members. This bug appears only if Broken Steel is installed. [verified]
pc Paladin Gunny will cease to move and become frozen in place in the courtyard of the Citadel during the Broken Steel questline. He will remain this way for the life of the game. This can also occur after being asked for power armor training.