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William Olsen
Biographical information
Date of birth

June 2nd, 2513

Gender

Male

Hair color

Brown

Eye color

Brown

Affiliation and military information
Rank

Spartan (SR-101)

Specialty

Rifleman

Battles
Status

Active

Class

SPARTAN-IV

  [Source]
"'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.

Biography

Early Life and Enlistment

Human-Covenant War

SPARTAN-IV Program

Personality and Traits

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