* ActingForTwo:
** In the third game, Creator/BrianDrummond plays both [[Anime/MobileSuitGundamWing Heero Yuy and Zechs Merquise/Milliardo Peacecraft]]. To Drummond's credit, the two sound almost nothing alike, although he very rarely tends to slip into Milliardo's gravelly voice while speaking as Heero, most often when saying Heero's CatchPhrase. And it's not that he can't do it (he does so quite well, in fact), it's just the bizarreness of him playing Heero after spending the last decade playing Zechs in the ''Wing'' anime and various video games.
** Creator/BradSwaile as both [[Anime/MobileSuitGundamCharsCounterattack Amuro Ray]] and [[Anime/MobileSuitGundam00 Setsuna F. Seiei]]. Hilariously, these are the exact two pilots used for the tutorial missions, so players will hear Swaile's characters talking to each other right out of the gate.
** Creator/RichardIanCox plays both [[Anime/MobileSuitGundam Kai Shiden]] and [[Anime/MobileSuitGundam00 Allelujah Haptism]].
** Creator/SamuelVincent voices both [[Anime/MobileSuitGundamSeedDestiny Athrun Zala]] and [[Anime/MobileSuitGundam00 Tieria Erde]].
** Creator/ScottMcNeil plays both Duo Maxwell and Gym Ghingham, leading to a number of between-mission dialogues where Scott [=McNeil=] comments on what a psychopath Scott [=McNeil=] is[[note]]He's right[[/note]].
** Creator/MichaelAdamthwaite is Ribbons Almark as well as Seabook Arno.
** In Japanese, Creator/TakehitoKoyasu is both Gym Ghingham and Milliardo Peacecraft, while Creator/ToruFuruya is both Amuro and Ribbons.
** Also in Japanese, there is an invoked case with Creator/ShuichiIkeda as [[Anime/MobileSuitGundamCharsCounterattack Char Aznable]] and [[Anime/MobileSuitGundamUnicorn Full Frontal]]. However, this didn't carry over into the English dub version, even though Frontal is stated to have a voice that cannot be distinguished from Char's. The dub has Frontal voiced by Jonathan Love as opposed to Creator/MichaelKopsa.
*** It still is played straight with Johnathan Love also doing double duty and voicing [[Anime/MobileSuitZetaGundam Paptimas Scirocco]].
** [[Anime/MobileSuitZetaGundam Haman Karn]] and [[Anime/MobileSuitGundamCharsCounterattack Nanai Miguel]] are both voiced by Creator/YoshikoSakakibara in Japanese, and Nanai can be selected as an Operator in the third game.
* BadExportForYou: While both games on the next-gen consoles have been released overseas, the show tunes from various ''Gundam'' series (ex. "Anime Ja Nai," "Rhythm Emotion") are only available in the Japanese versions. Also, the export versions of the second game are not dual-audio like the first and third games. And the 4th game is download-only in the US.
** Although this is justified since all these songs would require licensing fees and with all the shows in the game the fees wouldn't be cheap.
* MarthDebutedInSmashBros: Characters and suits from ''[[Anime/MobileSuitVictoryGundam Victory Gundam]]'', ''[[Anime/AfterWarGundamX Gundam X]]'', ''Anime/TurnAGundam'' all made a localized debut in these games long before the series themselves were available in America.
* NoExportForYou: ''Dynasty Warriors: Gundam: Special/Gundam Musou Special'' for the [=PS2=] which introduced Musha Gundam MK II was only released in Japan. Not really a loss in any way since unlike most of the entries on that page, pretty much every improvement and addition was shunted to ''2'', along with ''[=2=]''[='s=] base improvements.
** What however is a no export for you is the ''Vita'' version for ''Gundam Reborn'' in the west as well as losing a disc-based release in the US (both won't get the Vita version but the disc-based version will be available in Europe).
* TheOriginalDarrin: Creator/MattHill returned to voice Kira Yamato in the third game after being replaced in the second.
* TheOtherDarrin: The English versions of the games were unable to obtain the services of several voice actors who worked on the various Gundam anime series, and thus had to recast some of the roles.
** Due to Domon's VA , Creator/MarkGatha retiring from voice acting to become a doctor, the role was recast with Phil Fulton.
** Heero Yuy was hit by this twice over, with Music/MarkHildreth being replaced by Louis Chrillo in the first two games, then Creator/BrianDrummond took over fopr the third. Apparently Hildreth wasn't even contacted to reprise the role.
** Kamile Bidan was also hit with this, first with Travis Milne filing in for Jonathan Lachlan Stewart in the first two games, than Tim Hamaguchi taking over in the third game when Milne was tied up with ''Rookie Blue'', which is a TV series based in Toronto.
** Simon Hill replaced his uncle, Creator/MattHill, as the voice of Kira Yamato for the second game.
** On that note, since the dubbing is done by voice actors mostly from Canada, series dubbed in America (''[[Anime/MobileSuitGundam0083StardustMemory Gundam 0083]]'', ''[[Anime/MobileSuitGundamF91 Gundam F91]]'', and ''[[Anime/MobileSuitGundamUnicorn Gundam Unicorn]]'') had to be recast.
*** Creator/SteveStaley is replaced as Seabook Arno and Banagher Links by Creator/MichaelAdamthwaite and Brendan Hunter respectively.
*** Laura Rushfeldt replaces Creator/StephanieSheh as Audrey Burne/Mineva Zabi
*** Anna Cummer replaces Creator/MichelleRuff as Cecily Fairchild
*** Cheryl [=McMaster=] replaces Creator/TaraPlatt as Marida Cruz
** In-series example -- Judau is voiced by Creator/AndrewFrancis instead of Sean Broadhurst in the sequel
** Another in-series example, only in Japanese: due to the death of Creator/DaisukeGori in between between the second and third games, Creator/TesshoGenda is voicing [[Anime/MobileSuitGundam Dozle Zabi]] in ''3''.
* RoleReprise: Creator/YasunoriMatsumoto reprise his role as the Knight Gundam from the ''SD Gundam'' [=OVAs=].
* WhatCouldHaveBeen: The last stage in Emma's story mission depicts what would happen if [[spoiler:[[Anime/MobileSuitZetaGundam Quattro sided with Axis]]]].
** Kamille is often seen in Gyunei's Jagd Doga, possibly a ShoutOut to the persistent rumor that Gyunei was created as an {{Expy}} of Kamille after Tomino rejected the idea of Kamille showing up in ''Anime/MobileSuitGundamCharsCounterattack'' fighting for Char after being put through some questionable brain surgery.
----