Major Varl was a Sontaran officer of the Ninth Sontaran Battle Group.
History
Under the command of his superior, Stike he and a large group of Sontarans attacked Space Station Chimera and killed nearly all aboard. Only Varl and Stike went with their new ally Chessene of the Franzine Grig to Spain. There Varl and Stike waited while Dastari attempted to find a way for them to possess time travel. Chessene betrayed them and attacked them with Coronic acid, they dissolved and Varl died. Stike survived, but his wounds were catastrophic, and he died in the explosion of his ship. (DW: The Two Doctors)