Kygon Brox

 was a Sontaran commander belonging to the "glorious" Eighth Battle Fleet. In 1941, he and a small retinue came to Earth after the Sontaran world engine weapon, the Warsong, was discovered and began reactivating. Kygon and his group hid among the Tuareg tribesmen so as not to alert the Rutans. After believing the Twelfth Doctor had arrived to steal the Warsong, Kygon attached his mind to the Doctor's with a mind scythe to try and interrogate him. The Doctor made the link go the other way, and Kygon explained the history of the weapon to the Doctor. Kygon watched from a distance as the weapon was activated by the Rutan Heinz Bruckner. (COMIC: The Instruments of War)