Pavel Fedorin

 was a friend of Lena Korolev, and rescued her, the Fifth Doctor and Turlough. He told the Fifth Doctor about the about of feral dog and cats attacks that has happened. He tried to find information of the Doctor and saw pictures of his many incarnations. The Doctor tried to save him from being buried alive in a collapsing building, but his injuries were to severe. (AUDIO: Singularity)