The RPI-00/SC Gloucester Cornelia Unit is a customized Knightmare Frame from Code Geass: Hangyaku no Lelouch, built for and associated with Princess Cornelia li Britannia. It is a specialized variant of the Gloucester used by her forces, reflecting her status as a high-ranking Britannian commander and elite battlefield leader. In the series, it represents the advanced military technology of the Britannian Empire and Cornelia’s role as a formidable antagonist and strategic commander in the conflict against the Japanese resistance.