User:Delta-269/David O'Neil

"What the hell are those things?"

- David O'Neil, encountering the Flood for the first time

Private David O'Neil was a UNSC Marine Infantryman during the Human-Covenant War. He survived the UNSC's first encounter with the Flood on Instillation 04, but was killed when the Master Chief detonated the Pillar of Autumn's fusion reactors.