!!The Showa series contains examples of:
* BadExportForYou: Until recently with the release of the whole Showa series by Shout Factory, Most Region 1 Gamera DVD releases contain awful, faded, little to no color Fullscreen 16mm TV prints, most masters actually stolen from the video catalog Sinister Cinema.
* DuelingMovies: The Franchise/{{Godzilla}} series, of course.
* DuelingDubs: About half the series was dubbed twice: First, by [[Creator/AmericanInternationalPictures AIP-TV]] (The English Language Dubbers Association and [[Anime/SpeedRacer Titan]] [[Series/{{Ultraman}} Productions]] did the actual dubbing) in the '60s and '70s, then later by Sandy Frank in the '80s, who used pre-existing Hong Kong produced dubs for at least ''Barugon'' and ''Gyaos''. The first set of dubs are the ones that show up on budget DVD releases (the actual pristine film elements are currently stored in the MGM vaults); the second appeared on MST3K.
* NamesTheSame: Barugon / Baragon from Toho's ''Film/FrankensteinConquersTheWorld ''.
* HeyItsThatVoice: Many recognizable Hong Kong dubbers can be heard in the late '60s international dub used for Sandy Frank's syndicated version of ''Barugon''. Ted Thomas (Kubota from ''Film/GodzillaVsGigan'') even plays a newscaster.
* KeepCirculatingTheTapes: Neptune Media's OOP tape of ''Gammera The Invincible'' is the only way the see the American theatrical version in widescreen. Shout! Factory intended to include this version on the ''Gamera'' DVD, but the UCLA, the owners of the print used for the Neptune tape, refused to offer it again for a new digital scan. Since Celebrity/Just For Kids never issued it on Laser Disc, the Hong Kong dub of ''Barugon'', which was oddly not included on Shout! Factory's DVD, also shares this fate.
* WhatCouldHaveBeen: An unfilmed movie by the name of ''Gamera vs. Garasharp''. Garasharp was a massive, cobra-like creature, armed with a sonic rattle and poisonous breath. The story ends with Gamera defeating Garasharp (naturally) and two babies emerging from her body. Just as the military closes in to destroy them, Gamera rescues them and flies them off to a deserted island, because he's the friend to ''all'' children, not just human ones. The film was scheduled for a 1972 release, but Daiei went bankrupt before they could start on it.
!!Examples from the rest of the series:
* WhatCouldHaveBeen: An anime based on the franchise was planned (rumor was that Creator/CartoonNetwork was going to sponsor it) but was scrapped after ''Gamera: The Brave'' tanked at the box office in Japan.
** Daiei had approached {{Toho}} with a proposal for a crossover film with Franchise/{{Godzilla}}. Toho rejected the proposal.
* Hey,Its that voice!: The english dub of Gamera Guardians of the Universe was made by ADV so...
** The Gaos can't touch Dr. Nagamine, [[Anime/NeonGenesisEvangelion not when she has her AT field!]]