I recently started reading Dan Abnett's Eisenhorn Omnibus. So far it's been a very entertaining read. It inspired me to draw up my own Inquisitor. Haven't come up with a name for him yet. I also threw in his personal bodyguard.
A very promising start for a future character and sidekick for any of your coming works. You really should try to work this idea of yours, and the finished work will be super-duper cool! Oh, + this pic is awesome!