Ok so I'm working on the fluff for a character I plan on making called Lazarius Daemoncaller. He's a Chaos unit. I originally planned on making him a fallen Grey Knight Brother Captain, however I was informed by a friend of mine that the Grey Knights never fall to chaos, so he read in a book once anyway. Is it too much of a stretch to make this guy, a GKT Brother Captain, a new corruptee for the armies of Chaos? There are always exceptions, and maybe since it was so unheard of that a GKT would fall to Chaos that it was just pushed under a rug? THe current draft of the fluff also has him being thought as dead when he is turning. So, feedback. Can I make this work, or is it too much of a stretch. Thanks in advance for anything you guys give me.