Grash
From Tardis Wiki, the free Doctor Who reference
Grash was a crew member aboard the Vanguard. He disagreed with Deeva Janson's captaincy, and created a mutiny as she refused to let him to execute the Eighth Doctor and Charlotte Pollard. His mutiny eventually failed when he fell under the control of the Cybermen, who killed him when he went insane. (AUDIO: Sword of Orion)