UNSC Orphellion

The UNSC Orphellion, hull classification symbol CV-21, was a long-serving of the. Commissioned in 2528, the Orphellion would participate in numerous engagements throughout the course of the, including decisive battles such as the and the. Following the end of the war, the Orphellion was assigned to help defend the outermost fringes of space. In 2555, the ship would receive a fairly significant retrofit, equipping it with a shield generator, more advanced sensor and navigation systems, and facilities for a brand-new complement of.

In late 2558, the onset of the would see the ship's AI, Amycus, turn on the vessel's crew. Although the situation would ultimately be resolved with the aid of Operational Detachment-Sigma and the UNSC Vegas, a large number of crew were killed, and the Orphellion would be left severely damaged.