Celation

Celation was a representative of his home galaxy when he allied himself with the Daleks in their plan to conquer the Solar System. He had been persuaded to join the alliance by Zephon. After he was betrayed by the Daleks, the Doctor convinced him to go back to his own people and warn them about the Daleks' invasion plans.

Celation resembled a bald humanoid and was covered in black spots.