Sutherland Sieg is a fictional Knightmare Frame featured in the anime series Code Geass: Hangyaku no Lelouch. Unlike most characters, Sutherland Sieg is not a person but rather a highly advanced prototype Knightmare Frame piloted by Lloyd Asplund and later by Suzaku Kururugi. This unit plays a significant role during the rebellion against Britannia, showcasing unique abilities and superior performance on the battlefield. Its presence underlines the technological advancements and strategic battles central to the series' plot.