* ActorExistenceLimbo - Creator/HirotakaSuzuoki, who voiced [[Franchise/{{Gundam}} Bright Noah]], died between 2 and The Final; all of Bright's lines in the latter are taken from the first game
* HeyItsThatVoice - The OriginalGeneration characters:
** 2: Creator/DaisukeKishio as Tak and Creator/NaomiShindo as Marina
** The Final: Creator/DaisukeNamikawa as Barrel and [[spoiler:Belkt]], MieSonozaki as Fei
** R: Creator/MiyukiSawashiro as Autumn with Cure Peach and Cure Passion as the evil girls.
* NamesTheSame - [[Anime/MobileSuitGundamSeedDestiny Shinn Asuka]] and [[MacrossZero Shin Kudo]] in R. {{Lampshaded}}.
* PostscriptSeason - [[Anime/MobileSuitGundamSEEDDestiny Gundam SEED Destiny]] is already over by the time R starts; the first stage has Shinn, Kira and Athrun Zala facing off against an unknown enemy using Earth Alliance mobile suits.
* TalkingToHimself
** [[Anime/MobileSuitZetaGundam Yazan Gable]], [[MetalArmorDragonar Tapp Oceano]], and [[Anime/HeavyMetalLGaim Mirao Kyao]] in the first game, with the latter two making a return appearance in 2.
** Barrel [[spoiler: (almost literally) with Belkt]] in 3.
** Ryuusei and [[LightNovel/FullMetalPanic Kurz Weber]] (Creator/ShinichiroMiki), Zero and [[Anime/MacrossFrontier Luca Angelloni]] (Creator/JunFukuyama), Kira, [[Anime/CodeGeass Gino Weinberg]] and [[MacrossFrontier Brera Sterne]] (Creator/SoichiroHoshi), and Shinn and Shin (Creator/KenichiSuzumura) in R. The latter's actually {{Lampshaded}}, (along with NamesTheSame) by Alto.
* UrbanLegendOfZelda - It's ''astonishing'' how many people like to spread rumors the A.C.E. OriginalGeneration will one day appear in the ''VideoGame/SuperRobotWarsOriginalGeneration'' sub-series
** Considering [=SRW=] brought in characters from ''Hero Senki'' and ''Great Battle'', and A.C.E. is pretty much just [=SRW=] run through the VideoGame/ArmoredCore filter, this isn't as far out as it seems.
*** Now there's a bit of reciprocity, if not, complete {{irony}}: [=SRW's=] own OriginalGeneration are part of R's lineup.
**** And now the Gespenst models from ''Portable'' are appearing in ''[[VideoGame/SuperRobotWarsOriginalGeneration Original Generations 2nd]]'', so it's not really an Urban Legend anymore.
* WhatCouldHaveBeen - On Banpresto's official blog, WordOfGod said the team's first choice to round out the ''[[Anime/MobileSuitZetaGundam Zeta Gundam]]'' cast in R was Four Murasame piloting the Psyco Gundam, but because of game balance concerns and a lack of weapons they ultimately went with Amuro and the Dijeh instead.
** {{Macross 7}} was also considered for inclusion in R, but the design team couldn't figure out a way to make the "attack with music" system work in ''A.C.E.''. They ended up replacing it with ''MacrossFrontier'', which caused the game to be delayed about a year while they changed things around.
** In one of his blog posts, Terada mentioned that {{Super Robot|Genre}}s aren't normally supposed to get into ''A.C.E.'', but some factors could change that[[note]]Specifically mentioned are popularity and ability to mesh with a 90s[=/=]2000s-style serious plotline[[/note]], and listed a bunch of shows that were considered but ultimately rejected. This list includes: ''Anime/{{Daitarn 3}}'', [[Anime/{{Braiger}} the J9 Trilogy]], ''Anime/ShippuIronLeaguer'', ''Anime/JushinLiger'', ''Anime/{{Daiohja}}'', ''Anime/{{Zambot 3}}'', ''Anime/SpaceWarriorBaldios'', ''Anime/TriderG7'', ''Anime/MakyouDensetsuAcrobunch'', ''Anime/MiraiRoboDaltanious'', the ''Eldran'' franchise, ''Anime/{{Goshogun}}'', the [[Anime/CombattlerV Nagahama]] [[Anime/VoltesV Romance]] [[Anime/{{Daimos}} Trilogy]], ''Anime/GoLion'', ''Anime/GodMars'', ''Anime/{{Gaiking}}'', ''Anime/KotetsuJeeg'', ''Anime/GEARFighterDendoh'', ''Anime/GodSigma'', ''Anime/MechanderRobo'', and ''Anime/{{Raideen}}''. Also mentioned as prime candidates were ''Anime/GaoGaiGar'' and ''Anime/NinjaSenshiTobikage''.
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