Zeitgeist: The Gears of Revolution
Cillian Creed, the Butler of MacBannin, AKA Officer Porter. As later analysis would reveal, Creed was a former member of the RHC who retired after the last war. He ended up working for MacBannin and in posession of powers tied to the Bleak Gate.
He was the one who killed Nilasa, and was killed by the team after three encounters with them in the fight under MacBannin’s manor.