Sparky The Dragon was Sir Trancelot's pet dragon, who was kept at his Haunted Castle. Sparky was no ghost, and therefore could not be dematerialized. Not even King Arthur's fabled sword Excalibur proved to be a match for Sparky's fire breathing powers. But Jake Kong Jr. finally managed to defeat Sparky using a fire hose from his ghost pack.
Sparky the Dragon first appeared in the episode No Pharaoh At All (Part III).
Sparky uses the same character model as the Ghost Dragon, seen in No Mo' Snow. Although it was specifically stated in 'No Pharaoh At All' that Sparky was no ghost, that sequence did take place sometime around 500 AD, so it could be possbile that by the year 1986, Sparky had become the Ghost Dragon.