Very little is known about O'Hara's life before the outbreak. O'Hara likely lived in or near the state of Virginia.
O'Hara is one of the residents who was killed when the Wolves broke into the Alexandria Safe-Zone and started ransacking houses and murdering residents.
The next day, O'Hara's body is buried and O'Hara's name is added to the memorial wall, along with the dozen other townspeople killed in the attack.
This list shows the victims O'Hara has killed:
- Possibly numerous amounts of zombies