* BadExportForYou: When the triple-film DVD came out in 2009, many expected all three movies, including this one, to be widescreen unlike the previous VHS and DVD release. Sadly...no dice.
* HeyItsThatVoice: Mewtwo's Japanese voice actor, Masachika Ichimura, once played Eric in the stage adaption of ''ThePhantomOfTheOpera''. That's right, Japanese Mewtwo is The Phantom.
* UrbanLegendOfZelda: There's a rumor circling that Mew in the Japanese version said that the originals were inferior and should perish. According to Nyarth it's dialogue was:
-->The real one is real. If they fight only using bodies without skills, the true ones will not be beaten by their copies.
** Basically the rumor came from UnfortunateImplications, half-jokingly suggested by [[WebVideo/AtopTheFourthWall Linkara]]'s, [[WebVideo/ThatDudeInTheSuede Suede]]'s, and [[WebVideo/YouCanPlayThis Jew Wario]]'s crossover review. Complete with clips of Mew PuttingOnTheReich.
* WhatCouldHaveBeen: This film was originally going to serve as the finale to the series, but then the series was renewed and the whole film was rewritten. [[http://www.youtube.com/watch?v=b70GRNYnacI The Japanese teaser trailer]] shows clips from the original planned film.