List of Stargate Universe Characters - Stargate Crossover Characters

Stargate Crossover Characters

See also: List of Stargate SG-1 crossover characters and List of Stargate Atlantis crossover characters

Several characters who initially appeared in Stargate SG-1 or Stargate Atlantis have made appearances in Universe. From the beginning, Robert C. Cooper had ruled out the permanent inclusion of any well-known characters from the two previous Stargate series, although "there will certainly be plenty of opportunity for cross over, and there certainly might be some familiar faces in the premiere and in subsequent episodes".

• Jack O'Neill (played by Richard Dean Anderson) in "Air" (Part 1+3), "Earth", "Subversion", "Incursion" (Part 1)
• Samantha Carter (played by Amanda Tapping) in "Air" (Part 1), "Incursion" (Part 1)
• Daniel Jackson (played by Michael Shanks) in "Air" (Part 1), "Human", "Subversion", "Incursion" (Part 1)
• Major Marks (played by Martin Christopher) in "Air" (Part 1)
• Walter Harriman (played by Gary Jones) in "Air" (Part 1)
• Bill Lee (played by Bill Dow) in "Air" (Part 2) and "Twin Destinies"
• Rodney McKay (played by David Hewlett) in "Seizure"
• Richard Woolsey (played by Robert Picardo) in "Seizure".

  Brad Wright had approached Picardo at the beginning of SGU season 1, and Picardo had declared his interest in appearing early on in the show.