William "Bill" Olsen (callsign Valiant Four) was a member of the UNSC Marine Corps who volunteered and was accepted into the SPARTAN-IV Program. He was transferred to the UNSC Infinity to replace Christopher Dorton as a rifleman in Fireteam Valiant on March 14th, 2558.
William "Bill" Olsen (callsign Valiant Four) was a member of the UNSC Marine Corps who volunteered and was accepted into the SPARTAN-IV Program. He was transferred to the UNSC Infinity to replace Christopher Dorton as a rifleman in Fireteam Valiant on March 14th, 2558.