Interrogator Senioris Xerza is Inquisitor Tancred's aide and proxy; and the only person known to regularily see the Inquisitor in person. By rights she should have been promoted to Inquisitor many years ago, but for her own reasons she would rather continue to work under Tancred.

Her background is not well known to the Acolytes, not because its all that secret, but rather because it is ancient history now. What is know is that she once worked as a gunship pilot for the Scintilla branch of the Adeptus Arbites. She still has uncanny piloting skills, possibly a spin-off effect of her telekinetic abilities – she has an intuitive understanding of forces, vectors, and speeds.

At some point during her service her psychic abilities were discovered, but she  apparently ended up in Tancred's retinue instead of being hauled away by the Black Ships. She is most assuredly a psyker, but not a Psykana-sanctioned one. Instead she became  Tancred's protege and received her training directly from him. Not entirely unknown within the Inquisition, but not strictly Puritan either.

Xerza is a mature woman of indeterminable age. The fine lines that grace her beautifully chiseled face suggests a woman in her early forties, but in the  distant dark future looks can be deceiving. Most likely her real age is in excess of one century, but access to rejuvenation treatments and advanced medical care has slowed the inevitable ravages of time. Her hard dark eyes can sometimes give a clue as to the real age and experience of the soul that looks out of them – but then again there are few who can muster enough willpower to look her in the eye for long.

Interrogator Xerza is a very tall woman, standing in excess of 1.8 meters tall, that somehow manages to combine a slender frame with hard muscle and ample feminine curves. It is likely that her body is a product of good genes, lifetimes of grueling physical conditioning, and the best body-sculpt money can by.

She keeps her luxurious dark locks long, always finding yet more ways to artfully arrange it in both ways both practical and esthetic. When it comes to clothing, jewelry and makeup she also seems to have an inexhaustible supply of new looks, each one perfectly tailored to the situation.

Xerza is, like her master Tancred, a powerful psyker, a rare Beta Grade with extensive experience to back up her raw power potential. In addition to her uncannily accurate teleemphatic skills she is also a strong telekine – a psyker with the ability to manipulate physical objects with but a thought.

When in combat she wields her kineblade with deadly precision, using her psychic powers to augment the speed and power of her weapon and to ward off her assailants' blows. If aware of the danger Xerza can even protect herself from enemy bullets, or turn them back on her attackers.

On those occasions when she goes into the field she prefers to wear a armored black body-suit, much like those used by the Adeptus Arbites, except that hers has been tailor-made to accommodate a range of unusual equipment and athletic combat moves. Various straps and buckles have artfully crafted from psi-reactive materials to allow Xerza to more effectively use her own telekinetic powers upon the suit; she can make truly amazing leaps with little effort, even a sort of limited flight is possible is she puts her will to it.

Xerza shares many of Tancred's traits and ideologies, but they disagree over one fundamental item – Xerza does not believe in the reincarnation of the Emperor. To her he is the Immortal God-Emperor who has sacrificed himself to protect and defend the race of man. Nothing more, nothing less. If ever he can lay down his burden it will be because humanity has evolved and grown strong enough to protect itself from the both the enemy within, xenos aggression, and the horrors of the Warp.