Ghosts has been one of the biggest comedy hits of the last decade, and it's made the transition to the big screen with the film The Possession of Button House which is finally out in cinemas now.A huge part of the appeal is the main group of lead ghosts, mostly made up of the Horrible Histories and Yonderland team, who all perfectly complement each other.But when the show was being developed, one of the stars/creators was really pushing for a different character to be part of the main gang.