Vasily Beloi, more commonly referred to as Vaz, is an Orbital Drop Shock Trooper. He was the son of a Construction worker named Oleg Beloi, who was killed by the Covenant when Vaz was 4 years old. In January 2553, he and two other ODSTs including his friend, Staff Sergeant Malcolm Geffen, and Sergeant Lian Devereaux, were hand-picked by the Office of Naval Intelligence to serve under Captain Serin Osman in a covert operations team known as Kilo-Five. From the UNSC Port Stanley he performed numerous missions.
- He has a large scar running down his jaw.
- At one point he was involved in a relationship with a girl named Chrissie.
- He seems to be motivated more by morality than his orders unlike other Marines.
- He has a deep hatred for the various species of the former Covenant, Sangheili in particular.
- He is one of the few Russian characters in the Halo saga.
- He enjoyed watching Hockey finals on Waypoint.