For the comic strip see: Funhouse (comic strip)
The Funhouse was a creature with the appearance of an old house. It had the ability to create illusions. It fed off power and intended to take power from The Doctor's TARDIS. It mislead The Doctor and Frobisher and created an illusion of Peri. It became one with the TARDIS. It was eventually trapped in the time vortex where it began the long wait for new prey. (DWM Funhouse (comic strip))