Raiko Sumeragi is a character in Knightmare Battle Tournament! and is also a member of the Knightmare Battle Squadron, the Knights Of The Rounds.
Raiko has spiky white hair along with azure colored eyes. She has a similar build comparable to Kallen Kouzuki's, however, her bust is not as large. She also posesses a more calm appearance.
Raiko is a hostile person and can only get along with those she deems worthy since not many people can match her intelligence level or her physical abilities. As a result, only people like Rai, Kallen, Suzaku, and Lelouch are able to speak to her freely without getting an insult.