Big Bad Wolf

The Big Bad Wolf was a fictional character from the tale of Little Red Riding Hood. When Gwyneth looked into Rose Tyler's mind, she said she saw the 'Big Bad Wolf'. (DW: The Unquiet Dead)

When under attack by a member of the Blathereen family, Dennel remarked "The Big Bad Wolf's coming to blow our house down". (NSA: The Monsters Inside)

Mickey Smith's website described the Doctor as "I'm The Big Bad Wolf and it's way past your bed time." (WEB: Defending the Earth!)