Dorothea Ernst is a member of the Knights of the Round as the Knight of Four of the Holy Empire of Britannia. She is a dark-skinned, blackish green-haired woman who is described as being as heroic as Bismarck, the Knight of One. She displays loyalty to the Empire by rebelling against Lelouch and Suzaku. As a Knight of the Round, she is very skilled in battle, being among the best Knightmare pilots of the world. Her personal Knightmare is the Palomides