While serving as an Interrogator in the retinue of the infamous [[Gregor Eisenhorn]] - who later sponsored his promotion to Inquisitor in 346.M41 - Ravenor's body was woefully crippled during the atrocity of a chaos attack on the Holy Novena on [[Thracian Primaris]]. He suffered 100% 3rd degree burns to his entire body among other injuries and the only way that medicaes could insert life-support equipment was to slice a hole in Ravenor's flesh where his mouth should have been. Ravenor now exists within the cocoon of a force chair where his already powerful psychic abilities (which became stronger to compensate for his crippled body), further boosted by built-in psi-amplifiers, allow him to function as a full Inquisitor, providing him with the ability to mind-speak to his agents as well as temporarily take control of their bodies, via the wraithbone pendants they ware, usually at the cost of rather painful and dizzying after-effects. In "Ravenor", we learn that his Psychic capacity is between high-level delta and low-level gamma, this makes him one of the most potent psykers in the service of the Imperium. However, this is contradicted in "Ravenor Rogue" when Orfeo Culzean describes Ravenor as an "Alpha plus psyker". This may be a typing mistake or Orfeo exaggerating Ravenor's abilities. He also is able to read most people's minds as well as defeat all but the strongest psykers in single combat.