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- "'Scuse me, Covies, but the guy with heavier firepower has the right of way."
- ―Bill Olsen, 2558
Spartan 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 4th, 2558.
Early Life and Enlistment
Personality and Traits