Rai Sumeragi is a character in Knightmare Battle Tournament! and is also a member of the Knightmare Battle Squadron, the Black Knights.
Rai has spiky white hair along with azure colored eyes. He has a strong build, comparable to that of Suzaku Kururugi, but an outward appearance similar to Lelouch Lamperouge.
Rai is a kind person who is able to get along well with anybody he barely meets, but if his friends or family are threatened, he will not hesitate to take action and defend them, even if it costs his life.