From what I understand, it means he's COMPASS' representative here, in charge of the day to day management of their experiment on us.

Though, in truth, once we had him, he seemed afraid of us. [ Possibly because Nikolai kept threatening to torture him, even though they had no intention of that. Still. ] I don't think previous Project Heads were anything like that fearful. The last one was killed in battle.

At any rate, that's what he represents. He's no ally of ours. He's been working for them.