Who is Julius Kingsley?
In episode 3 of the OVA series it's revealed that Julius Kingsley is infact a brainwashed Lelouch. the brainwashing however is somewhat unstable as when Julius is seen on the train cluching his eye this is a sign that the brainwashing hasn't fully worked and "Lelouch" is trying to come back. he reappears briefly later on showing also that his Geass has yet to be sealed as it is at the start of R2