Blon Fel-Fotch Passameer-Day Slitheen's father

As Blon Fel-Fotch Passameer-Day Slitheen claimed to the Ninth Doctor, her father would have had her fed to the Venom Grubs should she have refused to make her first kill at the age of 13. (TV: Boom Town) By extension, he would also be the father of Blon's brothers, Jocrassa Fel-Fotch Passameer-Day Slitheen, and another unidentified Slitheen. (TV: World War Three)