Stenk

 was the leader of a Sontaran fleet that wanted to invade Drakkis. He hoped that Jask would die an honourable death. His cowardice had lost 10000 troops when he left them to escape. He also disobeyed Sontaran Command orders by invading Drakkis instead of observing the effect of the Last Great Time War. (AUDIO: The Sontaran Ordeal)