Template:Human Character Infobox
Private O'Brien was a UNSC Marines aboard Reach Station Gamma, Dock 9, during the Fall of Reach.
Biography
Battle of Reach
- Main article: Battle of Reach
O'Brien, along with Staff Sergeant Avery Johnson, PFC Wallace A. Jenkins, and Private Bisenti, were fighting a group of kig-yar when MCPO John-117 and PO2 Linda-058 boarded the station to destroy the logs of the ONI ship, UNSC Circumference.
Battle of Installation 04
- Main article: Battle of Installation 04
- "Glad you could make it, Chief... we saved some party favors just for you."
- — O'Brien greets John-117 on board the Pillar of Autumn
He was picked up with Johnson and the 'Chief when they took a pelican and flew back to the Pillar of Autumn. When the Pillar of Autumn was boarded, John-117 recognized him (but could not remember his name) and saved him from a Kig-yar soldier. He was killed either when the Covenant boarded the Pillar of Autumn or during the Battle of Installation 04.
List of appearances
- Halo: Combat Evolved (First appearance)
- Halo: The Fall of Reach
- Halo: The Flood