Kaarsh

Field Major Kaarsh was a Sontaran. In 1605, a Rutan ship which had gone missing in the 13th century sent a distress beacon from London, near Parliament. Kaarsh and his men started searching for the ship, which contained doomsday weapons the Sontaran Empire could use against the Rutan Host. While searching for this weapon, Kaarsh placed Black Rod under mind control and arrested Rory Williams as a prisoner of war, mistaking the latter as an agent of the Rutans. Both later escaped. (VG: The Gunpowder Plot)