Pollux rui Britannia

Pollux Rui Britannia is a character exclusive to the Nintendo DS video game and a member of the Britannian Imperial Family. His twin brother is Castor Rui Britannia. He pilots the Knightmare Frame Aquila. Pollux possesses the same Geass ability as Lelouch, though when brought against one another his seems to be inferior. He is frequently mistaken for his brother, much to his annoyance, he possess a pair of golden eyes and a much more mischievous face than his brother.

Trivia

 * Both he and his brother are likely named after the Greek and Roman mythological twin brothers, Castor and Pollux, respectively.