* BadExportForYou: In the international print of the film used for Sony's transfers, the contrast is untimed, making the wires suspending the Megaguirus prop suddenly visible. This SpecialEffectsFailure is not present in Japanese versions of the film.
* CrossCastRole: Minoru Watanabe, a male stunt actor, plays the female Megaguirus.
* EditedForSyndication: Along with GMK, Sony/Tristar created a 90 minute version of the film for airing on the [[Creator/{{Syfy}} Sci Fi Channel]] and some on-demand services. As one may guess, many subplots were trimmed or spliced out for time, but Tristar also felt the need to censor some of Kudo's dialogue, resulting in [[http://www.dailymotion.com/video/xvqkma_bodybuilding-huh-godzilla-vs-megaguirus_shortfilms this gem]].
* WhatCouldHaveBeen: Originally Sony had licensed this film with the hope of giving it a theatrical release in the United States.
** It began as a direct sequel to ''Film/{{Godzilla 2000}}'' and the middle part of a planned trilogy, however when developing the story it was decided it would be easier to just set it in a separate universe.
----