After the success of the original My Little Pony special - which would later be known as "Rescue at Midnight Castle" - in 1984 there were plans for another. The Unreleased My Little Pony Special was to involve the Rainbow Ponies and bring back several of the cast from the first special. No such special was released, instead another special known as "Escape from Catrina" was created. However a few seconds of the special was shown at the end of a VHS for Rescue at Midnight Castle.
There is a European VHS cover for the Catrina special that has nothing to do with the actual special. It's speculated that this was based on the Rainbow Ponies special as a few of the ponies appear on the cover. Megan is nowhere to be seen but a prototypical incarnation of her little brother Danny, who would later co-star in My Little Pony: The Movie and the My Little Pony 'N' Friends series, appears riding an older, winged version of Spike.