Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.



Critas was an Eternal who took part in the race for Enlightenment.


Critas and his crew all dressed in the fashion of Ancient Greece. His ship was a trireme, designed to the same period.

However, the Fifth Doctor noticed via the video screen aboard Striker's ship, the Shadow, that Critas was wearing on the first finger of his right hand an anachronistic 17th century Spanish signet ring with a large red crystal.

During the race, Critas was rounding Venus and was about to overtake the Buccaneer when Captain Wrack of that ship destroyed his through the power of the Black Guardian. Critas and the Eternal officers aboard his ship were returned to their realm, though the human crew of the ship all perished. (TV: Enlightenment)

Behind the scenes[]

  • Critas appears only as an image on the video screen aboard the Shadow.
  • Critas was played by Byron Sotiris, who remained uncredited both on-screen and in Radio Times.[1]


  1. The Complete History Volume 37, Issue 56; "Cast and credits" page 63.