premise: Buffy the Vampire Slayer is unaffiliated with Joss Whedon.
hypothesis: Buffy the Vampire Slayer is an American television series created by Joss Whedon under his production tag , Mutant Enemy Productions with later co-executive producers being Jane Espenson , David Fury , David Greenwalt , Doug Petrie , Marti Noxon , and David Solomon . Buffy the Vampire Slayer (film) . The film was taken in a different direction from the one its writer Joss Whedon intended , and five years later , he created the darker and acclaimed TV series of the same name . Drusilla , or Dru , is a fictional character created by Joss Whedon and David Greenwalt for the American television series , Buffy the Vampire Slayer and Angel .