Guest Stars Paul McGillion as Dr. Carson Beckett Dean Marshall as Sgt. Bates Craig Veroni as Dr. Peter Grodin Christopher Heyerdahl as Halling Richard Dean Anderson as Jack O'Neill Michael Shanks as Dr. Daniel Jackson Garwin Sanford as Simon Wallis Robert Patrick as Colonel Marshall Sumner USMC Co Starring James Lafazanos as Male Wraith Boyan Vukelic as Sgt. Stackhouse Edmond Wong as Atlantis Technician Casey Dubois as Wex Reece Thompson as Jinto Dan Payne as Wraith Warrior Bro Gilbert as Scientist Melia McClure as Ancient Woman Stefano DiMatteo as Toran Ona Grauer as Female Ancient David Milchard as SGC Technician Aaron Dudley as Male Ancient Dan Shea as Sgt. Sylvester Siler Peter Grasso as Scientist Mary Joan Buchanan as Beckett's Mom