Mr. Fenton, from Martian Dreams
The Avatar found Mr. Fenton guarding Argyre in Martian Dreams. Mr. Fenton said that Rasputin (Raxachk in the monk's body) sent him out from time to time to gather information. He added that he wasn't concerned about the Avatar breaking into the city, since Rasputin had mystical powers. He revealed that Raxachk could use telekinesis, psychometric powers and could read minds. He gloatingly added, that thus the Avatar was at a real disadvantage.
Before Raxachk later fled Rasputin's body, he murdered his helpers, including Mr. Fenton.