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 crippled during a chaos attack on the Holy Novena on [[Thracian Primaris]]. He suffered 3rd degree burns to his entire body. 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, a process called "waring", via the wraithbone pendants they wear, 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.

Ravenor has a dedicated coterie of associates who assist him in fulfilling his role as an Inquisitor of the Imperium of Man: