The Empress Paranoia attack after the Sethian Rebellion caused the creation of a new kind of secret police.
The Quizzers have authority unmatched by any other Subject. A flash of their badge sends shivers down the spines of even the most hardened Guardian or canny Privateer.
With this authority they can recruit anyone in the Empire to aid them in their investigations.
Of course most of the time these investigations involve seducing young beauties suspected of heresy, then, if they pass the test, handing them over to be brides of the Empress but you cant deny a girl a little job satisfaction.
The unique ability of the Quizzers is their diversity. Warriors, including the Quizzer in charge, all have a former Allegiance that gives them the tactical options of that Allegiance allowing for an interesting mix of the weird, the wonderful and the deadly.
Each Quizzer Warband is unique so a discussion on their tactics would be somewhat redundant. The trick is to find a combination that works for you and your style of play.