* CelebrityVoiceActor: ''Music/PaulWilliams'' voices Rep in the second special.
* MissingEpisode: There was actually another TV Special in the works between ''Escape From 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.
* UnintentionalPeriodPiece: ''Escape From Catrina'' has an anti-drug theme that doesn't appear in post-1990s cartoons much. Otherwise it avoids looking obviously 1980s due to the lack of humans and timeless fashions.
* WhatCouldHaveBeen:
** 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]].