Imposter!Sue

An Impostor!Sue or Impostor!Stu, also called a character replacement, is an impostor of a canon character. Usually the character is so grossly out of character that mere possession or Suefluence no longer explains their behaviour. The proper way of dealing with an Impostor!Sue is to first locate the canon character that is impersonated. Often they can be found hiding in a plothole somewhere. The agents can then procede to charge and dispose of the impostor as they would a regular Sue. Impersonating a canon character is added as a charge.

A problem arises with Stus that try to impersonate Captain Jack Harkness. Jack can't stay dead and for some reason his impostors have this characteristic too. On their one encounter with an Impostor!Jack agents Emma and Tasmin decided to dispose of the impostor by taking him into Greek mythology and chaining him up next to Tantalos.