The Guren S.E.I.T.E.N. Eight Elements is a highly advanced Knightmare Frame piloted by Kallen Kozuki in the anime series Code Geass: Hangyaku no Lelouch. This mecha is a major upgrade of the original Guren, featuring enhanced agility, flight capabilities, and devastating weaponry such as the radiant wave surger. As Kallen’s personal unit, it plays a vital role in key battles, symbolizing the Black Knights’ technological prowess and serving as a formidable opponent to the Britannian forces.