Lelouch was born on December 5, 2000 a.t.b. as Lelouch vi Britannia the son of the Emperor of Britannia, Charles zi Britannia, and the late Imperial Consort Marianne, making Lelouch the Eleventh Prince of the Holy Britannian Empire. He was seventeenth in line to Imperial throne prior to his mother's assassination, an event which also left his sister blind and crippled. A ten-year-old Lelouch confronted the Emperor afterward and accused him of leaving his mother defenseless, even going as far as renouncing his entitlement to the throne. In response, his father banished him to Japan, where he was used as a political hostage in the Sakuradite conflict.
Lelouch possesses very strong philosophical beliefs: beliefs that define both his actions and his motivation for them. Perhaps his most notable is that he is against his father's beliefs of social Darwinism. He believes the world can live in cooperation rather than competition and conflict. To achieve this aim, he believes that the ends justify the means; he is willing to commit evil if it means bringing down a worse evil in the process. Lelouch also has strong beliefs concerning death and killing. Notably, he states several times through the series his belief that "the only ones who should kill, are those who are prepared to be killed."