Yes, it loooks like so.Is that a Custode?
He has written Cadian Blood. I haven't read it so don't how good it is.What has Aaron Dembski-Bowden written in the past?
Surely you mean the Death Guard??The Iron Warriors on the other hand are represented in a ton of the books. Their book was "Flight of the Eisenstien", but are also represented a bit in Fulgrim and Galaxy.