Shogalath

Shogalath was a well known god in the solar system of the Vandosion race. A group of rebelling Vandos aliens thought of Shogalath as an abomination. They then discovered that he had died. Eventually it was found that Shogalath had been reincarnated as Phil Tyson. When the Vandosians eventually tracked Tyson down, the Doctor managed to save him. Before Phil left, he whispered to the Doctor "Bad Wolf." (DWA: Mr Nobody)