ギルバート・G・P・ギルフォード

Gilbert G.P. Guilford is a bespectacled man who was once known as the "Spearhead of the Empire". He is a confidante and personal knight to the Second Princess Cornelia (who he's in love with), and commands her Glaston Knights. Though he initially pilots a Gloucester, he switches to the more advanced Vincent model in the second season. In the first-season finale, he aids in putting down the Black Rebellion with the help of the Glaston Knights. Following Cornelia's disappearance during the rebellion, he remains in Area 11, dutifully awaiting her return. After Viceroy Carales is killed in the second season, Guilford serves as a temporary replacement. During the battle for Japan, Lelouch uses his Geass to make Guilford believe that he is actually Cornelia, turning Guilford to his side; however, this causes Guilford to eventually sacrifice himself to save Lelouch from the FLEIJA explosion. He later manages to reunite with Cornelia after somehow escaping. /

From url=https://en.wikipedia.org/wiki/List_of_Code_Geass_characters#Britannian_Army.