Guest Stars Gary Jones as Sgt. Walter Harriman Torri Higginson as Dr. Elizabeth Weir David DeLuise as Pete Shanahan Steve Bacic as Camulus G. Patrick Currie as Fifth Kira Clavell as Amaterasu Co Starring Dan Shea as Sgt. Sylvester Siler Michael Shanks voices Thor Vince Crestejo as Yu The Great Barclay Hope as Col. Lionel Pendergast Chelah Horsdal as Lt. Womack Kevan Ohtsji as Oshu James Bamford as Eighth Uncredited Buddy Dolan as Cmdr. Langley