Phobos is a character from Quake III Arena. He is tied to the Doom universe storyline.
An experienced veteran, he led the invasion of the demon-haunted tunnels of Phobos. There, he was betrayed by superiors who thought they could learn more from watching him die than by studying his reports.
A courageous, determined soldier, used to command, Phobos has got that "officer and a gentleman" esprit d'corps. Unfortunately, his last mission taught him about betrayal and sabotage. He trusts no one and nothing except his training.