Griffoth

Griffoth was the home planet of the Graske (VG: Attack of the Graske) and Groske.

Astronomical data
As seen from orbit, Griffoth was a purple planet with grey scars which led to the underground. It was inhabited by dangerous predators, as well as the Graske. The Graske lived in caverns, hollowing out tunnels which were connected by airlocks with puzzles. These tunnels led to the stasis chambers of the Graske, where they stored the original copies of their changelings. (VG: Attack of the Graske)

Behind the scenes

 * Griffoth was the first planet apart from Earth seen in the BBC Wales production of Doctor Who.
 * According to the non-narrative source REF: Doctor Who: The Time Traveller's Almanac, Griffoth was one of the 27 planets stolen by the Daleks to power their reality bomb.