- You may be looking for Kalinda Ulrik.
He fell back in time and met Michael Faraday and the Seventh Doctor. He located a time corridor and travelled to the Battle of Pejorica, where he met the Sixth Doctor and realised that he, the Dalek Prime and a Special Weapons Dalek were travelling back along the Doctor's timeline. Although he wanted to give the Daleks the Jariden device, he was killed by the Dalek Prime. (AUDIO: The Four Doctors)