Primary

• Euphemia li Britannia Sister of Lelouch Lamperouge
• Euphemia li Britannia Sister of Cornelia (young)
• Euphemia li Britannia Sister of Nunnally Lamperouge
• Euphemia li Britannia Sister of Clovis la Britannia
• Euphemia li Britannia Daughter of Charles zi Britannia
• Euphemia li Britannia In love with Suzaku Kururugi

Extended

• Clovis la Britannia Son of Charles zi Britannia
• Clovis la Britannia Brother of Lelouch Lamperouge
• Clovis la Britannia Brother of Euphemia li Britannia
• Clovis la Britannia Brother of Nunnally Lamperouge
• Clovis la Britannia Brother of Schneizel el Britannia
• Clovis la Britannia Brother of Cornelia li Britannia
• Charles zi Britannia Father of Lelouch Lamperouge
• Charles zi Britannia Father of Nunnally Lamperouge
• Charles zi Britannia Father of Euphemia li Britannia
• Charles zi Britannia Father of Cornelia li Britannia
• Charles zi Britannia Father of Schneizel el Britannia
• Charles zi Britannia Father of Clovis la Britannia
• Lelouch Lamperouge Son of Marianne vi Britannia
• Lelouch Lamperouge Brother of Nunnally Lamperouge
• Lelouch Lamperouge Brother of Clovis la Britannia
• Lelouch Lamperouge Brother of Euphemia li Britannia
• Lelouch Lamperouge Brother of Cornelia li Britannia
• Lelouch Lamperouge Son of Charles zi Britannia
• Lelouch Lamperouge Brother of Schneizel el Britannia
• Lelouch Lamperouge Best friend of Suzaku Kururugi
• Lelouch Lamperouge Pilot of Gawain
• Lelouch Lamperouge Pilot of Shinkiro
• Lelouch Lamperouge Friend of Rivalz Cardemonde
• Lelouch Lamperouge Friend of Shirley Fenette
• Lelouch Lamperouge Friend of Milly Ashford
• Nunnally Lamperouge Sister of Lelouch Lamperouge
• Nunnally Lamperouge Daughter of Marianne vi Britannia
• Suzaku Kururugi the personal Knight of Euphemia li Britannia
• Suzaku Kururugi Best friend of Lelouch Lamperouge
• Suzaku Kururugi Pilot of Lancelot