Bastian was a male Human who lived in the time the Taelons arrived on Earth. Originally, he was a marine but he left the corps because he believed in the Taelons and thus became a Volunteer where he served as a Colonel within those military forces. He deeply believed in the Companions and so long as they needed him, he was unwilling to stop his faith in them. Colonel Bastian was dispatched to help protect resistance fighters during the Day of Sanctuary where he lost five Volunteers during a suicide attack against Liberation members. (Episode: Take No Prisoners)