Rai

Rai (ライ) is the default name; the player can rename the protagonist of the Sony PlayStation Portable video game, Code Geass: Lost Colors, at their discretion. He suffers from amnesia and is discovered by Milly and Lelouch at Ashford Academy, where he fell unconscious after escaping a Britannian facility. He is taken in as a temporary student, while trying to recover his memories. His face is never seen in-game, only in official art; he appears to be fairly young, with bright blue eyes and silver hair worn in a style similar to Lelouch's.

Rai is actually of Britannian descent. His father was of Britannian royalty and his mother was Japanese, of the Sumeragi clan, the same clan Kaguya belongs to, thus resulting in his ill treatment from his other siblings because of his half-breed status. Hundreds of years ago, in order to protect his mother and younger sister, he bound himself in a Geass contract with an unidentified individual. His Geass ability allowed him to ascend to power. However, during a war with a neighboring country, while he was only trying to raise the fighting spirit of his people in a speech, he lost control of his Geass and accidentally ordered the people to fight to the death against the enemy. This order caused not only his people, but his mother and sister who he had wished to protect, to charge to their deaths, leaving him with nothing. In his loneliness and sadness, he used his power on himself to make him forget all of this and put himself into a deep sleep inside a ruin similar to that found on Kamine Island. He was discovered by General Bartley, who put him in the same facility in Area 11 where C.C. was held captive by Britannia. He awoke and used his power of Geass to escape the facility, ending up at Ashford Academy.

Geass
He possesses the same Geass ability as Lelouch, but it uses sound as a medium instead of eye contact, and much unlike Lelouch, Rai's geass directly effects every part of the brain rather than just the one of its control units( as Lelouch's controls the central nervous system). The effect is represented as a red wave like Rolo's Geass.