Guest Stars Torri Higginson as Dr. Elizabeth Weir David Nykl as Dr. Radek Zelenka Mitch Pileggi as Col. Steven Caldwell Christopher Heyerdahl as Wraith Leader (Todd) Michael Beach as Colonel Abe Ellis Martin Christopher as Major Marks Jill Wagner as Larrin Michelle Morgan as F.R.A.N. Brendan Penny as Wraith Leader Co Starring Chuck Campbell as Chuck Niall Matter as Lt. Kemp Patricia Cullen as Replicator Crew Member Jason Coleman as Larrin's Crewman