Crate of Mongooses: Make 12d6 extra close combat attacks at S1 AP-. "DIE DEMON!" Skreeskreeskree!
Daemon Screwdriver: Functions as Daemon Hammer, but even more suggestive. "Pound or Screw? Choices choices..."
Psychic Condom: Functions as Psychic Hood, but only works against Slaanesh. "You don't know where she's been."
Big Black Coat: Provides no armor save but makes the Inquisitor even more Inquisitorial. "Screw armor, I'm an Inquisitor!"
Badass Hat: All units wishing to assault the Inquisitor's unit must pass a morale test or fall back. "Nobody messes with the hat."
Flying Circus: The Inquisitor and his retinue gain the Infiltrate universal special rule. "Nobody expects us!"
Signature Sidearm: S6 AP3 Bolt Pistol. "Then I blew the Space Marine's head off..."
Untouchable: All Cullexus special abilities -and- cannot be specifically targeted by daemons or psykers. "You too can have a deus ex machina!"
Badass Bounty Hunter: All stats at 5, 3 Wounds, 3+ Armor, 2+ Invul. "Bald guys never go out of style."
Busty Redhead: All stats at 4, 2 Wounds, 4+ Invul. Starts with two one handed weapons of your choice, loses both after first turn. "We don't keep her around because she's particularly good at her job..."
Cannon Fodder: Statted as an Inquisitorial Stormtrooper. Give this model an intriguing backstory. All wounds must be assigned to this model first. "He'd been with me for years..."
Really Smart Guy: Allows a re-roll of any single dice per turn, but Ld must be tested each time or unit becomes Pinned. "Yes, that's very fascinating, but we're kind of busy here."
Rogue Trader: All stats at 4, 2 Wounds, Ld10. Can take any wargear from any codex. If Rogue Trader model comes within 12" of an objective model detatches from unit becoming an Independent Character and moves as fast as possible towards objective. Should he reach it, he and the objective are immediately removed from the game. "That bastard stole the MacGuffin!"