Ensign Dmitri Corbeau was a junior pilot officer abord the Barrayaran Imperial military ship, the Prince Xav. A Sergyaran, but not a native one, he and his family emigrated there when he was five years old. At some point, he became one of the victims of the infamous Sergyaran worm plague; the scars from his encounter and the surgical removal of the worms crossed his arms and torso. He joined the Barrayaran Imperial Service on a five year hitch, and they trained him as a jump pilot.