The Unnamed Corpsman is a member of the UNSC Navy's Hospital Corps. It was his squad who found John-117 when he landed in a jungle near Mount Kilimanjaro in Tanzania on Earth during the Battle of Earth. He helped John regain some of his movement, before they move towards Crow's Nest.
- His rank is Corporal, yet he is a Navy Corpsman.
- Halo 3 (First appearance)