Hey, Dhomo was a Safeguard, wasn't he? And so was Sanakan. And they had their anti-Safeguard moments. So there's nothing wrong with Killy being a Safeguard. It's just his profession, it's not like he was brainwashed. And then there's that fight between him and Sanakan during volumes 3-4 where he loses his employment... That's how I first figured he was a Safeguard.