Skree

Lieutenant Skree of the Tenth Sontaran Battle Fleet was the operations officer on board General Staal's Sontaran Warship in 2009, during its attempt turn Earth into a Sontaran cloning planet. He was identical in appearance to his superior Commander Skorr. He was killed, along with the other Sontarans on the flagship, when Luke Rattigan activated his atmospheric converter on board, destroying it. (TV: The Sontaran Stratagem/The Poison Sky)