Atlantis Season 1

The twenty episodes that constitute the first season of Stargate Atlantis introduced the audience to a new world, related to but separate from the world of Stargate SG-1. Finally, humans have discovered the legacy of the Ancients, the Lost City of Atlantis. As humans explore the city and encounter dangerous new enemies throughout the season, viewers are taken on a wild ride of adventure and drama, with just enough comic relief along the way.

Main characters

 * Joe Flanigan as Major John Sheppard (20/20 episodes)
 * Torri Higginson as Dr. Elizabeth Weir (20/20 episodes)
 * Rachel Luttrell as Teyla Emmagan (20/20 episodes)
 * Rainbow Sun Francks as Lt. Aiden Ford (20/20 episodes)
 * David Hewlett as Dr. Rodney McKay (20/20 episodes)

Recurring characters

 * Paul McGillion as Carson Beckett (16/20 episodes)
 * David Nykl as Radek Zelenka (10/20 episodes)
 * Dean Marshall as Bates (9/20 episodes)
 * Craig Veroni as Peter Grodin (9/20 episodes)
 * Christopher Heyerdahl as Halling (6/20 episodes)
 * Boyan Vukelic as Stackhouse (6/20 episodes)
 * Chuck Campbell as Chuck (5/20 episodes)
 * Edmond Kato Wong as Unnamed Atlantis Technician (5/20 episodes)
 * Robert Patrick as Marshall Sumner (3/20 episodes)
 * Robert Davi as Acastus Kolya (3/20 episodes)
 * Erin Chambers as Sora (3/20 episodes)
 * Casey Dubois as Wex (3/20 episodes)
 * Reece Thompson as Jinto (3/20 episodes)
 * Ben Cotton as Peter Kavanagh (3/20 episodes)
 * Joseph May as Markham (3/20 episodes)
 * James Lafazanos as "Steve" (2/20 episodes)
 * Colm Meaney as Cowen (2/20 episodes)
 * Ryan Robbins as Ladon Radim (2/20 episodes)
 * Melia McClure as Melia (2/20 episodes)
 * Gary Jones as Walter Harriman (2/20 episodes)
 * Garwin Sanford as Simon Wallis (2/20 episodes)
 * Stefano Colacitti as Toran (2/20 episodes)

Guest Stars

 * Richard Dean Anderson as Jack O'Neill {1/20 episodes}
 * Amanda Tapping as Samantha Carter {1/20 episodes}
 * Don S. Davis as George S. Hammond {1/20 episodes}
 * Michael Shanks as Daniel Jackson {1/20 episodes}

Trivia

 * The Planet Lantea appears on every episode of the season
 * Carson Beckett is the recurring character with most appearances (16/20) without being listed as a main cast member. The following being Radek Zelenka (10/20) Bates (9/20) and Peter Grodin (9/20)

DVD

 * Stargate Atlantis: The Complete First Season

Novels

 * Stargate Atlantis: Rising (Novelization of the pilot episode, Rising)
 * Stargate Atlantis: Reliquary (Preceded by Hot Zone and followed by Sanctuary)
 * Stargate Atlantis: The Chosen (Preceded by The Eye and followed by The Defiant One)

Comics

 * Stargate Atlantis: Wraithfall