Volk

"Our contact was a man named Volk! We never met Makarov!" - Waraabe informing Captain Price about Volk.

Viktor "Volk" Khristenko is a villain from Call of Duty: Modern Warfare 3.

Volk is a Russian terrorist, founder and CEO of Fregata Industries, and the designated bomb manufacturer for Vladimir Makarov and the Ultranationalist Inner Circle.

He was later captured by Delta Force operators and is P.O.W.

Season 6
Allies: Vladimir Makarov, Alejandro Rojas (possibly due to being a member of Fregata), Waraabe, Malcom Hargrove and Charon Industries, Starlight Glimmer

Enemies: Delta Force, GIGN, U.S. Army, French Special Forces, U.S. Marines, Order of the Just, Knights of the Just, Derrick "Freeze" McCracken and Fireteam Mesa