Ffreuf

Ffreuf was a Glacian scientist. He opposed the tyrannical reign of Rraprro, and stole a thought-cube to learn why the Zilgors had left, but was unable to discover how to use it. He freed the First Doctor and Grahm from prison in the hope that the Doctor could help. After the Doctor accessed the cube for them and learned what had happened to the Zilgors, Ffreuf and his rebels set out to rescue them and overthrow Rraprro. Presumably, he succeeded. (PROSE: Justice of the Glacians)