Board Thread:Warhammer 40k General Discussion/@comment-25507520-20150514150104/@comment-28917471-20150516190941

If you are ok with siding with Chaos, then why would you bother to be an Inquisitor in the first place? Though I believe that this question is debatible...

Ravenor is later revealed to be a Gamma or Delta class psyker. He is not a true Alpha grade psyker. Plus, he use various psychic artefacts to increase his psychic abilities.