* ActingForTwo: Mina Asami played both [[spoiler:"[[SweetPollyOliver Prince]]" Igam and Princess Iyal/Mio]]. She also sometimes plays Oyobu.
* DevelopmentGag: The earlier design of the Maskman's helmet ended up being used for the team's predecessor [=X1 Mask=], making him a literal Maskman Prototype.
* TheOtherDarrin: Hiroshi Takeda succeeded Eiichi Onoda as the show's narrator.
* WhatCouldHaveBeen:
** Originally, the series was going to be titled "The Fiveman", and the five would be reflected in many of the team's elements, such as the Great Five, the first five-piece mecha. Three years later, [[Series/ChikyuuSentaiFiveman another team]] ended up using the name "Fiveman".
** More for its predecessors, but the concept of a five-piece giant robot did not start with ''Maskman'', but had taken time to manifest due to the difficulties in reproducing such a combination in toy form and fears of the cost of such a product.
** The FiveManBand were originally to be part of a Sugata Detective Agency. That was changed to Sugata Racing, which was quickly dropped in the first episode.
** There may have been earlier plans for Zeba to be human and a [[http://themsfightinwords.blogspot.com/2014/11/maskman-face-of-zeba.html former friend of Sugata's]], only to be changed when [[TheOtherDarrin Zeba's first actor left]].
** The development of Galaxy Robo, the ''second'' "Second Robo" following [[Series/ChoushinseiFlashman Flash Titan]], hinged on the commercial success of Great Five; had Great Five disappointed, there would have been no Galaxy Robo.
** ''Maskman'' lost one episode than usual for a ''Super Sentai'' 10th anniversary show which, due to delays in shooting brought about by bad weather, was pushed back a year.
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