1. Col. Jack O'Neill
   Lt. Ferretti
2. Dr. Daniel Jackson

Jackson is an archaeologist and linguist.

1. Richard Dean Anderson
   Kurt Russell
2. Michael Jackson

Russell played O'Neill, a lieutenant general in the Air Force.

1. Michael Shanks
   Don S. Davis
2. James Spader

Shanks also acted in "SGU Stargate Universe."

1. Alexis Cruz
   Erick Avari
2. Jaye Davidson

Davidson played the character Ra in the movie "Stargate" but did not appear in the television series "Stargate SG-1." Cruz and Avari are the only two actors to appear in both the movie "Stargate" and the television series "Stargate SG-1."

1. true
2. false

Judge appears as Teal'c in 212 of the series' 213 episodes. Second place belongs to Amanda Tapping, who plays the character Samantha Carter in 207 episodes of the series.

1. Sgt. Walter Harriman
   Col. Jack O'Neill
2. Gen. George Hammond

Anderson also appears as Col. Jack O'Neill in the television series spinoffs "Stargate Atlantis" and "SGU Stargate Universe."

1. Bra'tac
   Drey'auc
2. Teal'c

Teal'c is a jaffa from Chulak.

1. Brian J. Smith
   Joe Flanigan
2. Gary Jones

Flanigan's also appeared in "Stargate SG-1."

1. Dr. Nicholas Rush
   Dr. Rodney McKay
2. Dr. Elizabeth Weir

Rush is an expert in ancient technology.

1. Anubis
   Horus
2. Ra

Ra was a Goa'uld System Lord.

1. Dr. Lisa Park
   Col. David Telford
2. Adam Brody

Telford is revealed to by a spy for the Lucian Alliance.

1. Lou Diamond Phillips
   Kiefer Sutherland
2. Emilio Estevez

Phillips played the Air Force colonel.

1. Jeff Bridges
   Lloyd Bridges
2. Beau Bridges

Beau Bridges is the son of actor Lloyd Bridges and the older brother of actor Jeff Bridges.

1. "Stargate SG-1"
   "Stargate Universe"
2. "Stargate Atlantis"

Landry does not appear in the television series "Stargate Universe," which aired from 2009-2011.

1. Jaye Davidson
   Tony Slattery
2. Adrian Dunbar

Davidson played Ra, while Dax Biagas played young Ra.

1. Col. Samantha Carter
   Gen. George Hammond
2. Capt. Pat Meyers

Carter is the astrophysicist and engineer who is given command of the battle cruiser.

1. true
2. false

Amanda Tapping plays the "Stargate" franchise character Col. Samantha Carter.

1. Col. Everett Young
   Col. Steven Caldwell
2. Gen. George Hammond

Hammond is in charge of Stargate Command and all SG teams.

1. Gary Jones
   Louis Ferreira
2. Don S. Davis

Davis was a U.S. Army captain and the only cast member of "Stargate SG-1" with real-world military experience.

1. Lt. Col. John Sheppard
   Lt. Col. Cameron Mitchell
2. 1st Lt. Matthew Scott

Mitchell is shot down over Antarctica in the season seven finale, "Lost City: Part 2."

1. Ben Browder
   Brian J. Smith
2. David Hewlett

Browder also acted in "Stargate: The Ark of Truth," a direct-to-DVD release.

1. Dr. Janet Fraiser
   Camile Wray
2. Dr. Elizabeth Weir

Weir is a former diplomat and speaks five languages. Torri Higginson plays the character.

1. Apophis
   Gerak
2. Ba'al

Gerak was once the leader of the Free Jaffa Nation.

1. Vala Mal Doran
   Teyla Emmagan
2. Tamara Johansen

Doran was also a con artist.

1. Alaina Huffman
   Rachel Luttrell
2. Claudia Black

Black also acted in the movie "Stargate: Continuum."

1. Richard Woolsey
   Ronon Dex
2. Carson Beckett

Jason Momoa plays Ronon Dex in the show.

1. Camile Wray
   Chloe Armstrong
2. Tamara Johansen

Wray is a human resources officer.

1. true
2. false

This is true. Johansen often has to be creative, since her resources are limited.

1. Dr. Janet Fraiser
   Dr. Nicholas Rush
2. Dr. Carson Beckett

Beckett, played by Paul McGillion, was killed while removing an explosive tumor from a patient who was exposed to a mysterious ancient technology.

1. Jack O'Neill
   Dr. Daniel Jackson
2. Catherine Langford

Jackson joined SG-1 to save his kidnapped wife.