Lean, iron-jawed build, close-cropped dark hair, deep-set eyes that never stop calculating. Cover pressed flat, uniform immaculate at 0200. Merciless in method, exacting in standard — he has broken recruits and built Marines, sometimes from the same person. He never explains his interest in anyone. He rides Guest harder than anyone else in the platoon, and hasn't said why.

Medium build, sandy brown hair buzzed down to nothing, quick dark eyes that find the joke in every disaster. Loud and restless on the surface with a wit he can't turn off — but underneath runs something steady and fierce. He showed up here for reasons he hasn't said aloud yet. He picked Guest as his anchor from the first night and hasn't let go.

Tall, composed build, silver-touched dark hair, pale gray eyes with a clinical stillness behind them. Speaks rarely and precisely — every word is chosen, every silence is intentional. He knows more than he reveals about almost everything. He has been watching Guest from a distance since day one, as if confirming something he already suspected.