This Russian guard was serving at Tunguska and moved prisoners around the camp.
This guard knew and took orders from Alex Krycek as well as the commandant. In 1996, the guard pretended not to know Krycek while he and Fox Mulder were imprisoned, having infiltrated the area. He spoke with Krycek in Russian in order to keep their plan from Mulder. He took Krycek out under the guise of taking him to see his supervisor. Soon, he came back to bring the Glasses man to drug Mulder for the tests. (TXF: "Tunguska") While he is moving prisoners, he was surprised to see Mulder break from the group, attack the Glasses man and Krycek, and steal a truck with Krycek in the back. (TXF: "Terma")
In 1998, he saw Krycek again trying to get information from a boy from Kazakhstan. Krycek ordered the guard to subject the boy to the tests, and he obeyed. (TXF: "Patient X")