Greg was a pilot assigned to Project Valkyrie.

Greg and Shawn Arnold were launched to assist Roy Fokker in defending Jan Morris's transporter after it came under attack by Anti-Unification League fighters. (Robotech: From the Stars comic: "The Program") Both pilots again came to the aid of Fokker during a second attack by Anti-Unification League fighters. During the battle Greg was killed. (Robotech: From the Stars comic: "Conflict of Interest")