For the episode, see MST3K K10 - Cosmic Princess.

Cosmic Princess is a 1982 compilation film, assembled from two episodes of the 1970s sci-fi television program Space: 1999, "The Metamorph" and "Space Warp".

It is one of multiple compilation films of Gerry Anderson series (also see Invaders from the Deep and Revenge of the Mysterons from Mars) created by the New York division of British TV company ITC Entertainment (who originally produced these shows) to be aired in syndicated "movie of the week" packages in the early 1980s.


Commander Koenig (Martin Landau) and the crew of Moonbase Alpha find themselves facing off against the maniacal alien Mentor (Brian Blessed), whose daughter, Maya (Catherine Schell) is endowed with the ability to transform herself into any life form. Mentor plots to drain the minds of the Alphans, while Koenig attempts to extricate them from the situation.

In the second half, Dr. Helena Russell (Barbara Bain) tries to treat Maya, who has contracted a disease that causes her to lose control of her transformations. Meanwhile, Koenig and pilot Alan Carter (Nick Tate) are trapped millions of miles away from Alpha on the other side of a space warp.


  • Martin Landau as Commander John Koenig
  • Barbara Bain as Dr. Helena Russell
  • Catherine Schell as Maya
  • Tony Anholt as Tony Verdeschi
  • Nick Tate as Alan Carter
  • Zienia Merton as Sandra Benes
  • Brian Blessed as Mentor
  • Anouska Hempel as Annette Fraser


  • For the film version, several changes were made to the original footage:
    • About five minutes has been cut from each episode.
    • Several new effects shots were added.
    • A new voiceover was recorded for the alien message located by Koenig and Tony. The alien now refers to himself as "Vader" and makes references to the Whills (both Star Wars references) and states that he is from an Interplanetary Star Fleet, a Star Trek reference.
  • As both episodes used for this film are from Season Two of Space: 1999, most of the music is by Season Two composer Derek Wadsworth. But some themes from the Season One composer Barry Gray were used to fill in some of the new sequences and smooth over transitions.