Dervish (The Space Pirates)

Dervish was Maurice Caven's second-in-command in his band of space pirates. Caven had him install a remote control device into Milo Clancey's spaceship, LIZ 79.

When Caven's plan to blackmail the Space Corps by blowing up Ta was foiled by the Second Doctor, Caven and the rest of the pirates made a quick escape in their Beta Dart. However, General Nikolai Hermack had Major Ian Warne destroy the Beta Dart, killing Caven, Dervish and the rest of their men. (TV: The Space Pirates)