Bloody UNSC Marine
From Halopedia, the Halo wiki
In the level
Cairo Station, one of the UNSC soldiers often by covered in blood from multiple injuries. This is a rare occurrence, found only in the first hangar. He acts just like any other Marine, and doesn't play any role in the mission. This Marine seems to have less health than the other Marines, but this has not been confirmed, but on any level above Normal, he is normally one of the first to die. He is voiced by John Kassir . He also is one of the few Marines that never wears a helmet during the level (Most other hats are the Dress hat, Sergeant Hat or no hat). His accuracy (Overall including grenades, and rifle fire) is same as a normal Marine.