* CelebrityVoiceActor: ''Music/PaulWilliams'' voices Rep in the second special.
** In ''Rescue from Midnight Castle'', danger is [[PeterPan Firefly's]] life! Also, [[Theatre/TheOddCouple Felix Unger]] has a little piece of rainbow.
** Tirek is the narrator of ''WesternAnimation/TheTransformers''.[[note]]He was also a TV announcer that has done numerous commercials, including Transformers commercials, and various two minute infomercials, usually as the closing announcer, and usually not with his "Transformers narrator" voice.[[/note]]
** In ''Escape from Catrina'', [[WesternAnimation/TheLastUnicorn Molly Grue]] is addicted to a FantasticDrug.
* MissingEpisode: There was actually another TV Special in the works between ''Midnight Castle'' and ''Escape from Catrina'', which would have focused on the Rainbow Haired ponies. Alas, only one trailer for it was ever released, and the special has otherwise never seen the light of day.
** It is believed Danny was supposed to be in it as a Swedish cover for the Catrina special vaguely resembles the trailer and has him on it instead of Megan.
** As mentioned, the above scrapped special that Danny was supposed to be introduced in.
** Danny's original design looked quite different from the final version.
** There is a pony that appears in the first special but [[ToylessToylineCharacter never received a toy]].