Voiced by: Masamichi Satō
He is a 18 year old human. Son of the Martian north pole's Guerilla leader, Damian first mistrusted Joe and the others but later ends up joining them.
He has ninja skills and the only one of the series' protagonists who actually has a relation to ninjas.He even has ninja skills and later in series trains Joe and others. He is not very prominent during the early part of the series, but when Joe permanently takes control of Tobikage, Damian succeeds him as the pilot of the Kurojishi. He falls in love with a female ninja who was sent to trap his friends, but she sacrifices her life due to his love.