Well these ideas came to me after reading all your posts so props to you!
MGS Soldier - "!" "What was that? "Huh?" "?"
Assassin's Creed - One of the jug carrying ladies that always gets in your way while trying to escape a dozen guards.
Dungeon Master for D&D - 1st, being the narrator to everything that *is* d&d. 2. the Bar tender, which in my campaign is near invincible and a smart ass. kinda like that bar tender on the venture brothers who makes fun of Brock Samson's Mollet. (while Brocks license to kill was revoked.)
A Vet Sniper in Company of Heroes. I'd be stationed by myself behind enemy lines near a capture point. A ***** to spot/stop and i'll retreat w/enough time to make it home

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One of those monsterous sized Statue like NPC's that don't move/talk in the Mortuary.