!! The Franchise as a whole.

* ActorAllusion
** The Secretary General's line of once being called "Mr. One Shot" in ''Final Wars'' is a reference to an action film his actor Akira Takarada did years ago titled ''100 Shot, 100 Killed''.
** The infamous leap Godzilla does in ''Godzilla vs. Megaguirus''? A reference to Tsutomu Kitagawa's involvment in the SuperSentai series. With the exception of ''Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack'', Kitagawa was the man in the Godzilla suit throughout the Millennium series.
** In ''Godzilla vs. Hedorah'', Godzilla crosses his arms in a "+ " position. This same pose was made famous by Ultraman, whenever he fires off his trademark Specium Beam to finish off monsters.. Godzilla's (then) suit actor, Haruo Nakajima, played several [[MonsterOfTheWeek Monsters of the Week]] in the original ''Series/{{Ultraman}}'' series (one of them, Jiras, was in fact based from an older Godzilla suit, except with a large frill).
** Nakajima's protegé was Bin Furuya a.k.a. Ultraman.
** Akihiko Hirata wears an eyepatch in ''Ebirah, Horror of the Deep'', in allusion to his most famous role as the eyepatch-wearing Dr. Serizawa in the original ''Godzilla''.
** The mini subs used in GMK are named ''Satsuma'', in reference to actor Kenpachiro Satsuma, who played Godzilla from 1984 to 1995.
** The character played by Kumi Mizuno in ''Godzilla Final Wars'' is named Namikawa, in reference to her earlier role as Miss Namikawa in 1965's ''Invasion of Astro-Monster''.
* BadExportForYou:
** The infamous ADV release of Destroy All Monsters.
** The first wave of Classic Media disks were all in pan and scan, despite the fact that they had already been released in letterbox by Simitar sometime earlier.
** Classic Media's dirty, faded print of the U.S. cut of ''Rodan'' is in a very dire shape, and appears to be the same one that was released ''decades'' earlier on countless VHS and television releases.
** All official Region 1 releases of ''King Kong vs. Godzilla'' contain only the butchered American version, which adds in several awful scenes with American reporters and almost completely replaces one of Akira Ifukube's greatest scores with generic stock music.
* BigNameFan: Akira Kurosawa was such a big fan of his friend Ishiro Honda's work on the Godzilla series he wanted to direct his own.
* ContestWinnerCameo: To capitalize on ''Series/{{Ultraman}}'' and other such shows, Toho held a contest, where a entry called Red Arone. Renamed Jet Jaguar, details on the film were tied in DevelopmentHell until Godzilla and Gigan were included.
* CriterionCollection: The first Godzilla Film made the cut, featuring both the original and American releases of the film, as well as a lovely restoration on Criterion's part.
* DuelingDubs: Four Showa films are definitely known to have alternate English versions. An English trailer for ''Film/KingKongVsGodzilla'' exists (and was known to play in the Philippines and Malaysia occasionally), and a Turkish trailer for ''Film/InvasionOfAstroMonster'' has international English visuals (though it is of course unknown if an export English dub exists, as several European versions seem to have been translated from Japanese directly). ''Film/GodzillaVsMechagodzillaII'' is the only film to be dubbed twice in Hong Kong, and even then the original has never been released in a complete form. ''Film/{{Godzilla 2000}}'' is also known to have an export dub that has never been released either.
** ''Ebirah, Horror of the Deep'' (Tokyo, Frontier) / ''Godzilla versus The Sea Monster'' (New York, Titan Productions)
** ''Son of Godzilla'' (Tokyo, Frontier) / (New York, Titan Productions)
** ''Destroy All Monsters'' (Tokyo, Frontier) / (New York, Titan Productions)
** ''Godzilla vs. Hedorah'' (Hong Kong) / ''Godzilla vs. The Smog Monster'' (New York, Titan Productions)
** ''The Return of Godzilla'' (Hong Kong) / ''Godzilla 1985'' (Los Angeles, Ryder Sound)
** ''Godzilla vs. Mechagodzilla'' (Hong Kong, unreleased "rejected" dub) / ''Godzilla vs. Mechagodzilla II'' (Hong Kong)
** ''Godzilla 2000: Millennium'' (Hong Kong, unreleased) / ''Godzilla 2000'' (Mike Schlesinger, Creator/TriStarPictures)
* DuelingMovies: The ''{{Gamera}}'' series.
* ExecutiveMeddling:
** Ishiro Honda, the director of the first film and many other Creator/{{Toho}} kaiju movies, preferred science fiction/alien invasion movies (like ''The Mysterians'' or ''Gorath'') to kaiju efforts, but the monster movies were so successful that he didn't really have a choice. This is not necessarily a bad thing, as he still made excellent movies, but Honda's non-kaiju movies [[SugarWiki/NeedsMoreLove are often unfairly overlooked]]. This would explain why some of his entries had space monsters or alien invaders or both for Godzilla to fight. One of his movies even takes place on Planet X.
*** Speaking of ''Gorath'', the Monster Boom caused executives to insert giant menaces in any movie possible, hence the presence of Maguma--and then he was edited right the hell back out by American execs for the US release.
** Also, Shusuke Kaneko originally wanted to use Anguirus and Varan in a Godzilla movie he was directing. However, the executives at Toho Studios told him he had to use two more popular monsters. The end result? '''''Godzilla, Mothra, King Ghidorah: Giant Monsters All-Out Attack.'''''
** Creator/AkiraKurosawa, one of the most respected filmmakers of the 20th century, wanted to direct a Godzilla movie, but Toho didn't want to spend the money (as Akira was known to go overbudget and himself cost a lot to direct a film in addition to the Special Effects cost).
* FanNickname:
** "The Big Guy", "Big G", and "Goji-San" are all common nicknames for Godzilla.
** "Toonzilla" and "Godzilla Jr." for the [[WesternAnimation/GodzillaTheSeries animated version]] of Zilla's son.
* FlipFlopOfGod: Whether or not the monster from ''Film/{{Godzilla 1998}}'' was renamed Zilla. In interviews with [[http://web.archive.org/web/20050203181104/http://www.pennyblood.com/godzilla2.html Pennyblood]] and [[http://www.henshinonline.com/archive.html Keith Aiken of Henshin Online]] in 2004 nd 2005, [[WordOfGod Shogo Tomiyama and Ryuhei Kitamura]] confirmed that they'd renamed the American Godzilla "Zilla" because the 1998 film had reduced him to a mere animal and not a deity-like entity. In 2013, Matt Frank of IDW stated that Toho does not distinguish between Godzilla (1998) and Zilla as characters, and Chris Mowry - also of IDW - treated the two versions of the character as one-and-the-same [[http://www.comicbookmovie.com/fansites/monstroushotzone/news/?a=80739 in an interview]] regarding ''ComicBook/GodzillaRulersOfEarth''. However, Keith Aiken later [[http://31.media.tumblr.com/712098e787d5e3d1204cccadb9a294fc/tumblr_nbosoeA8nq1rl1vlfo1_500.png stated via Twitter]] that his interview with Tomiyama and Kitamura had been misquoted,[[note]]Making no mention of his review in November 2005 where he himself conflates them.[[/note]] and Toho does ''NOT'' consider the monster in Godzilla (1998) to be Zilla, but that Zilla is a "variation of the 1998 Godzilla".
* FranchiseKiller: Tri-Star's 1998 "adaptation" was almost this and from what reports said about Dean Devlin and Roland Emmerich's attitude towards it, this may have been their intent.
* KeepCirculatingTheTapes: Several films, notably those from the Showa era, have fallen into this. Granted, Sony and Tristar have rereleased said films on DVD, but these releases have since gone out of print. Fortunately, with companies like Classic Media and [[Creator/Section23Films Kraken Releasing]], this issue seems to be turning on its head.
** The original Japanese cut of ''Film/KingKongVsGodzilla'' has, so far, never been released in the US, and the current DVD release the movie did receive from Universal only contains the American cut. ''Film/KingKongEscapes'' also shares this fate.
** The worst example would be ''Film/TheReturnOfGodzilla'', despite the movie getting a theatrical release in America. The English version of the movie received a release on VHS that has since gone out of print... and that's about it. For some unknown reason, no company has bothered to license ''The Return of Godzilla'' and release either the Japanese version, the American version, or both on DVD or possibly Blu-Ray.
** ''Film/GodzillaVsMegalon'' has managed to avert this, but in the worst way possible. Creator/MediaBlasters, who previously released ''Film/DestroyAllMonsters'', was set to release ''Godzilla vs. Megalon'' on DVD and Blu-Ray under their Tokyo Shock label. However, there was a problem: their DVD and Blu-Ray release of ''Destroy All Monsters'' contained special features that weren't approved by Toho. This resulted in the release going out of print, as well as the DVD and Blu-Ray release of ''Godzilla vs. Megalon'' being put on hold while Media Blasters and Toho sort the issue out. As a sort of placeholder, Media Blasters ''did'' release the movie on DVD... a barebones DVD with no special features whatsoever. As of this edit, only the barebones DVD release ([[http://www.amazon.com/Godzilla-Vs-Megalon-Katsuhiko-Sasaki/dp/B0088FS1DC/ref=sr_1_1?s=movies-tv&ie=UTF8&qid=1391038455&sr=1-1&keywords=godzilla+vs+megalon which is currently out of stock on Amazon.com]]) remains available, [[http://www.amazon.com/Godzilla-Vs-Megalon-Blu-ray-Various/dp/B005K8RJF6/ref=tmm_blu_title_0 and the Blu-Ray has yet to be released]]. Media Blasters have announced plans to release a "[[LimitedSpecialCollectorsUltimateEdition Special Edition]]" of the DVD that contains the planned special features, along with the Blu-Ray version that contains the special features as well, but seeing as how it's now 2014 at the time of this edit and the Special Edition DVD and Blu-Ray still remain in limbo, it's doubtful there were even plans in the first place.
** ''Terror of Mechagodzilla'' was at one point another case of this; the film has only been released to home video ''twice'', and the first release was when Tri-Star had the rights to the franchise back in the 1998-2002 area, and as with all of those releases it has since gone out of print. As well, no Godzilla films have been released to Netflix as of March 2014 (though this may change when the Legendary remake lands this May). For a long time, it seemed the only way to watch ''Terror'' was to either happen to have a copy of the out-of-print DVD or pirate it onto your computer and watch it there. Thankfully, Classic Media has since released the movie on DVD.
* MissingEpisode: Whatever Dogolas was considered for, there's no record of it now.
* NamesTheSame: Raymond Burr's character in the American recut of the original is named Steve Martin. For his scenes in Creator/RogerCorman's cut of ''Film/TheReturnOfGodzilla'', they deliberately avoided using the character's full name.
** Also, Baragon and Barugon (from the second Gamera movie, ''Gamera vs. Barugon'').
** Miss Namikawa in ''Invasion of Astro-Monster'' and Defense Commander Namikawa in ''Godzilla: Final Wars'' (both played by Kumi Mizuno), though the latter was an intentional nod/tribute to the former.
** General Segawa in Terror Of Mechagodzilla, and Defense Director Segawa in the Heisei Godzilla films (both played by Kenji Sahara).
** Goro Maki the reporter character from ''Son of Godzilla'' and Goro Maki the ''reporter character'' from ''The Return of Godzilla''.
* NoExportForYou: Averted, as almost every Godzilla movie has received a release in the US. Even ''Film/TheReturnOfGodzilla'', [[KeepCirculatingTheTapes which has not received a DVD release as of this edit]], technically averts this trope by getting a theatrical release and a VHS release back in '85.
** Back when DVD didn't exist yet, this trope was sadly played straight with the Heisei Godzilla movies for a while. The last movie to be officially released in the US was ''Film/GodzillaVsBiollante'', which, while not released theatrically like its predecessor, was given a VHS release along with airings on cable television. After that, however, following Godzilla movies weren't given any official release in the states whatsoever, and the only way to watch them was by importing. It wasn't until both DVD and the 1998 remake came around that every Godzilla movie from ''[[Film/GodzillaVsKingGhidorah vs. King Ghidorah]]'' to ''[[Film/GodzillaVsDestoroyah vs. Destoroyah]]'' was finally given an official release.
** The Japanese version of ''King Kong vs. Godzilla'' has not been released on DVD outside of Japan.
** ''Rebirth of Mothra 3'' is an odd case, but much like ''The Return of Godzilla'', it ''technically'' averted this trope for some time. Despite owning the rights to the entire ''Rebirth of Mothra'' trilogy and releasing the first two movies on DVD, Sony never released the third movie. However, it did air on the SciFiChannel for a few years, and was also available on Crackle for some time. It wasn't until 2014, when, in light of ''Film/{{Godzilla 2014}}'', Sony started releasing the Godzilla movies they owned on Blu-Ray, and they announced that the entire ''Rebirth of Mothra'' trilogy would be getting a triple-feature Blu-Ray release, thus averting this trope entirely.
* TheOtherDarrin: Is portrayed by different suit actors in the Showa series, while Haruo Nakajima is mostly him until after ''Film/GodzillaVsGigan''. In the Heisei Series, he's portrayed by Kenpachiro Satsuma, and Tsutomu Kitagawa in the Millennium series.
* PlayingAgainstType: King Ghidorah, usually a villain, is TheHero in GMK.[[note]]Originally, Varan was going to have Ghidorah's role in the film but was shunted out bnd replaced by Ghidorah due to name value. [[/note]] That's not the only occasion where a monster has [[HeelFaceTurn switched]] [[FaceHeelTurn moralities]], but given that he otherwise varies between being a force of nature and outright evil, it's very notable.
* PropRecycling:
** Older Godzilla suits were often used in the latest movie for certain scenes to keep the current suit as undamaged as possible. This was often done for scenes featuring Godzilla in/under the water.
** The prop that was Manda in Atragon was reused in the series ''Series/UltraQ'', and renamed simply "''Dragon''".
* TropeNamers: ''Godzilla'' was the source of the following trope names:
** GodzillaThreshold
** JustHereForGodzilla: Invoked
** NotZilla
** RentAZilla
** TheWormGuy
** Also, SummonBiggerFish was once known as Did Godzilla Just Punch Out Cthulhu?
* UrbanLegendOfZelda: A few over the years.
** An old and fairly detailed rumor claims that, when Toho was trying to bring Godzilla back during the late '70s, they decided to cash in on the supernatural/Satanic craze that most horror movies were into at the time (like ''[[Film/TheOmen1976 The Omen]]'' and ''Film/TheExorcist'') with ''Godzilla vs. the Devil'', a joint production between Toho and UPA Productions. Mankind's sins begin to take physical form, creating monsters that resemble a spider, a fish and a bird. Godzilla arrives and defeats the demons, but Satan appears to battle Godzilla himself. [[http://tohokingdom.com/articles/art_toho_busters.htm However, this has long since been debunked]]. [[AscendedMeme Years later]], IDWPublishing announces a miniseries entitled ''Godzilla in Hell''...
** For decades a rumor has persisted that the Japanese version of ''King Kong vs Godzilla'' has an alternate ending in which Godzilla wins and the ending where Kong wins was made just to appease American audiences. While it's true that the ending of the movie was altered slightly (both monsters are heard roaring over the ending titles in Japan, while in America, it's just Kong's roar), the battle ends the same way in both versions.
** There's an old story that that the name "Gojira," which is a portmanteau of "gorilla" and "kujira" (Japanese for "whale") was originally a nickname for an overweight stagehand who worked at Toho, and the monster was named after him. However, it's just a story. In reality the name was created just for the monster to invoke a sense of size and strength.
** In the 90s there was a rumor that a movie focusing on Godzilla's adopted son, Little Godzilla, was in development, but it was never anything more than a rumor.
* WhatCouldHaveBeen:
** Godzilla was originally going to be a giant octopus, then later a giant fire-breathing gorilla, before Toho decided to make him the radioactive dinosaur we all know and love today.
** Likewise, Godzilla himself was originally going to be portrayed via stop motion animation. The idea was quickly dropped when the filmmakers realized it would be too time-consuming.
** ''King Kong vs. Godzilla'' eventually came out of Willis O'Brien's desire to make a ''King Kong vs. Frankenstein''.
*** Toho initially wanted to shoot on location in Sri Lanka, but since the rights to Kong slashed the budget, they resorted to shooting on their own Oshima Island.
** Toho had plans to do a film where Godzilla fights Franchise/{{Batman}} (seriously). For reasons unknown, the idea was quickly scrapped. Becomes HilariousInHindsight in light of Music/TheUltimateShowdownOfUltimateDestiny.
** ''Film/FrankensteinConquersTheWorld '' was originally going to be ''Frankenstein vs. Godzilla''. The idea was dropped when Toho realized what a one-sided match up it was, coupled by the fact that by the time they had thought up the movie, Godzilla had turned from villain to hero (and Frankenstein would've obviously been the hero of the story). The movie wasn't entirely scrapped, however: Toho simply replaced Godzilla with Baragon.
** Toho was going to loan Godzilla out to [[Series/{{Ultraman}} Tsuburaya Productions]] for the studio's 10th anniversary. The resulting movie was going to be called ''Godzilla vs. Redmoon'', in which two monsters -- Redmoon and Erabus -- appear in Japan. The military brings them together in the hopes that they will fight and destroy each other, but it turns out the beasts are male and female of the same species, and they mate! They hatch a little monster named Hafun, whom is unfortunately killed by an entrepreneur trying to capture him. When Redmoon and Erabus predictably go berserk, Godzilla appears and engages the two in battle. The movie was all set to be made when it was abandoned for reasons unknown. It would eventually be heavily reworked into a stand-alone movie without Godzilla, called ''Daigoro vs. Goliath.''
** Henry G. Saperstein, the American producer who helped with ''Monster Zero'', ''Film/FrankensteinConquersTheWorld '' and ''Film/WarOfTheGargantuas'', liked the Gargantuas so much that he suggested a ''Godzilla vs. Gargantua'' movie. Unfortunately, the idea never got passed the planning stage, and it's unknown if Godzilla was going to face Gaira, Sanda, both or a new Gargantua entirely.
** One of the more interesting ideas was ''Godzilla Vs the Asuka Fortress''. The concept for this production was penned by longtime series writer Shinichi Sekizawa along with producer and then Toho president Tomoyuki Tanaka. Despite what the title might suggest, Godzilla's rival in this production was to be a humanoid robot constructed by the Self Defense Force that was either part of the "Asuka Fortress" or it was to be the title character itself. Details are unfortunately very scarce (the only well known thing being that the film's plot dealt with a government revolt), and among those things uncertain is what type of role Godzilla was to play. Due to the revolt within the government, which was certainly an interesting story vehicle on the part of writer Sekizawa, it's quite possible that the "Asuka Fortress" was going to be manned by a rogue part of the government and the movie could have seen Godzilla slip into his hero persona to defeat it. In fact, it's quite possible that this movie would have continued the Showa series, although given the lack of details it's hard to say for sure either.
** A concept proposed by writer Ryuzo Nakanishi in June of 1978, titled ''King of the Monsters: Rebirth of Godzilla'', with the first portion of the title in English and the second in Japanese, the production was to be a remake of the original 1954 Godzilla film. The concept struck a cord with producer Tomoyuki Tanaka, as a more complete draft was commissioned. This second stage of production had both Nakanishi and writer Akira Murao at work on developing the concept, and was submitted on October 22nd, 1978. Jun Fukuda was set to direct the movie, but for whatever reason the project never came to pass. Given the very late draft submission, it's also worth noting that this film was possibly going to be slated for a 1979 release instead, unless the project itself ran behind schedule early on and was axed for that reason.
** Right after ''Godzilla vs. Biollante'', Toho decided to bring back their second biggest star, Mothra, in her own movie: ''Mothra vs. Bagan''. The two creatures were to engage in a series of battles across the globe before Mothra and the Mothra larva joined forces to defeat Bagan in a fight to the finish. Aside from ''Super Godzilla'', this unused script is probably what Bagan is best known for.
** Would you believe that the film Film/{{Gunhed}} started life as a Godzilla project?
** [[http://www.tohokingdom.com/cutting_room/g2_godzilla_biollante.htm According to this article,]] Godzilla Vs Biollante would have been....different.
** Also planned was a '90s remake of ''King Kong vs. Godzilla'', for Toho's 60th birthday. The idea was dropped when Toho discovered that rights to Kong had become ridiculously expensive since 1962.
*** Even sooner than that, There were plans for a direct sequel back in the 60's. Following the immense success of the first film (which when adjusted for inflation would be the highest grossing Godzilla film of all time), it's not surprising that the first concept considered for the next Godzilla movie was one that pitted the two monsters against each other again. Literally titled ''Continuation: King Kong vs. Godzilla'', the proposal for this project was written by Shinichi Sekizawa, who also worked on the previous film, and the draft was submitted in 1963. Unfortunately, the concept never got past the proposal stage, and a more fleshed out script was never commissioned while Sekizawa's ideas for the sequel remain mostly unknown.
*** Toho had planned to bring Mechani-Kong back in the 90s to fight Godzilla after they were unable get the rights to use Film/KingKong (See above). Unfortunately, RKO Studios pointed out that Mechani-Kong looked TOO much like King Kong and forced Toho to scrap the idea...despite the fact that Mechani-Kong is a TOHO owned character.
** Apparently, a few monsters were cut from the final version of ''Final Wars''; Kiryu, Oodako, Gorosaurus, Mothra Larva, and King Ghidorah to be precise.
*** Kiryu, Gorosaurus, and King Ghidorah, were all replaced by Gotengo, Zilla, and Kaiser Ghidorah respectively.
** Daiei actually approached Toho on making a ''Godzilla vs Gamera'' movie. Which Toho rejected. That sound you hear is your fandom crying.
** As said, Famed director, Creator/AkiraKurosawa once expressed a desire to direct a Godzilla movie, but was turned down by the good people at Toho, who were terrified by the thought of the budget that might be required to realize Kurosawa's vision.
** The original version of Dr. Yamane (Gojira) was going to be more of a caped corny villain who wanted Godzilla to leave. Even going so far as to sabotage operations against him. Thankfully all but his desire to have Godzilla live, to study for the good of mankind, were removed over time.
** In 1994, an attempt to make a different American Godzilla movie was made:
*** It was to have Creator/IndustrialLightAndMagic provide effects and have Godzilla fight an alien creature called The Gryphon. ILM ended up dropping out. But even with Creator/StanWinston offering his services (and even designing both monsters), the movie was never made due to Sony freaking out at the $120 million budget.
** After the American success of ''Film/Godzilla2000'', the writer for the American dub and Creator/JoeDante tried putting together a script for an [[http://www.drfilm.net/blog/?p=478 American sequel]] set in Hawaii featuring Creator/ChristopherLee, Creator/BruceCampbell and Creator/LeonardNimoy.
** The game ''Godzilla Unleashed'' has a couple of rejected monsters:
*** Hedorah- Scrapped due to complex cell shading that was required due to his blob like form, as well as due to his changes of forms, which were impossible to do with the Wii. [[DummiedOut However its sound files are still left in the game and Hedorah's wire frame also appears in the game but cannot be used]].
*** King Kong, and Zilla - The two american kaiju were hinted to be in the game in an interview. However they never made to the final cut of the game; King Kong due to rights issues with Universal and Zilla due to lack of popularity.
*** Fire Lion, The Visitor, and Lightning Bug - The other conceptualized "new" monsters to be voted into the game. However they all lost to Krystalak and Obsidius.
*** Mechani Kong - Same reason as Kong.
*** Gamera - Rights issues with Daiei.
*** Bagan - Dropped in favor of Varan due to Simon Strange liking Varan moreso.(Guy never gets a break huh folks?)
* WordOfSaintPaul: Haruo Nakajima, the original actor who played Franchise/{{Godzilla}}, believes that the Showa (1955-1975) incarnation of Godzilla is female. However, according to [[WordOfGod Toho Studios]], all incarnations of Godzilla to date have been male (yes, even the [[MisterSeahorse remake version]]).

!! 2014 Video Game
* ThrowItIn: Jet Jaguar is mainly in the game because a member of the dev team decided to model him for fun.
* WhatCouldHaveBeen: Monster X was almost put in, and they would have used Grand King Ghidorah instead of Heisei Ghidorah, but Hedorah took up too much time and manpower.