Castle Creep was a holovid popular amongst children of the Galactic Alliance around the time in which Allana Solo was growing up under the care of Han and Leia Organa Solo, in approximately 43 ABY. Castle Creep was an adventure story with vibrant characters such as dragons. One dragon was named Perystal.
Lando Calrissian Jr., a friend of Allana's, also watched the holovid on a regular basis. Both children owned a stuffed Perystal.