Shandar

Shandar was the King of the Rocket Men. He wanted to negotiate with. He stole K9 Mark I to use as a guard dog to kill the Master if he betrayed him. He was married to Myrren. The Master thought he was imbecilic for keeping the Fourth Doctor on board the Asteroid.

He was the fifth most wanted criminal in the galaxy, the first three being the Master, the Rani and the Terrible Zodin. (AUDIO: Requiem for the Rocket Men)