Gilbert G.P. Guilford is a distinguished Britannian noble and the personal knight of Princess Cornelia li Britannia in the anime series Code Geass: Hangyaku no Lelouch. Piloting the customized RPI-209 Gloucester (Guilford Custom), he displays exceptional loyalty, tactical skill, and chivalry on the battlefield. Guilford is Cornelia's steadfast protector, often leading her military campaigns. His devotion to Cornelia and sense of honor make him a respected figure among Britannian forces, and he plays a significant supporting role throughout the series.