History Trivia / JusticeLeague

* SoMyKidsCanWatch: Creator/JohnRidely came onboard as a writer because he wanted to work on something for his two children, since his recent work at the time had mostly been more adult fare like ''Series/ThirdWatch'' and ''Film/UndercoverBrother''.

* RefittedForSequel: Back when there were considerations to have ''WesternAnimation/SupermanTheAnimatedSeries'' be about Superman teaming up with various guest star heroes (and forming the Justice League at the end of the first season), some of these heroes included Green Arrow, Black Canary, Hawkman, Hawkgirl, the Question, Vixen, and Mister Miracle, who would later appear in ''Justice League Unlimited''.

* PopCultureUrbanLegends: It was long believed that [[[https://www.youtube.com/watch?v=I6wlCj-PqSk the original teaser/commercial for the episode "Legends"]] used footage from an earlier version of the episode that still featured the JSA, as opposed to their {{expy}} counterparts the Justice Guild. This commercial was just a fan-creation redrawing over part of [https://www.youtube.com/watch?v=R4oZseMTT1Y the real commercial]]; the JSA version of the episode never made it past the scripting stage. The [=YouTube=] video, which was a reupload, would later have its description changed to reflect [[https://www.youtube.com/watch?v=fwuzYmLdsP0 Watchtower Database discovering the actual origin of the fake]].

* PopCultureUrbanLegends: It was long believed that [[https://www.youtube.com/watch?v=I6wlCj-PqSk the original teaser/commercial for the episode "Legends"]] used footage from an earlier version of the episode that still featured the JSA, as opposed to their {{expy}} counterparts the Justice Guild. This supposed commercial was just a fan-creation redrawing over part of [https://www.youtube.com/watch?v=R4oZseMTT1Y the real commercial]]; the JSA version of the episode never made it past the scripting stage. The [=YouTube=] video, which was a reupload, would later have its description rewritten to reflect [[https://www.youtube.com/watch?v=fwuzYmLdsP0 Watchtower Database discovering the actual origin of the video]].

** The episode "Legends" was originally supposed to feature the [[ComicBook/JusticeSocietyOfAmerica JSA]], but DC management informed the show's producers that they could not use the JSA (one: they were trying to establish the comics as a non-parody group and two: producer James Tucker later revealed on Website/{{Twitter}} in 2020 that a sticking point was [[spoiler:the JSA dying]], both of which the episode would have been counterproductive towards) and the show had to come up with the {{exp|y}}ies that were used in the episode proper. [[https://www.youtube.com/watch?v=I6wlCj-PqSk This teaser]] shows the animated JSA. However, most would agree [[Administrivia/TropesAreTools not having the real JSA made the episode better]].

* TheWikiRule: Has a wiki [[https://dcau.fandom.com/wiki/DCAU_Wiki here]].

* TropeNamers:
** AndTheAdventureContinues
** TheGreatestStoryNeverTold
** HeroesUnlimited
** NoMoreHoldingBackSpeech ([[Administrivia/RenamedTropes renamed from World of Cardboard Speech]])

* PostScriptSeason: The season two finale was written as a potential GrandFinale, making ''JLU'' something of a post-script SequelSeries. The second season of ''JLU'' was also intended to be the wrap-up, hence the BookEnds with "Epilogue". After wrapping up so many storylines, the only place left to go was the LegionOfDoom. They also took the opportunity to tap into the deepest pools of the DCU, including ''ComicBook/{{Hawkman}}'', ''ComicBook/TheWarlord'' and ''ComicBook/{{Deadman}}''. According to Dwayne [=McDuffie=], there were plans for a fourth season if Warner Bros. wanted them to do one.

** After ''WesternAnimation/TheBatman'' began airing during the ''Unlimited'' phase, all major characters from that property other than Batman himself were suddenly verboten in ''JLU''; this was referred to as the "Bat-Embargo" by fans. Similarly, the villain Black Manta was banned when ''Comicbook/{{Aquaman}}'' [[DevelopmentHell seemed]] a go for a live-action series, as were Robin and Nightwing (aside from a silhouetted cameo from the latter in "Grudge Match") because of ''WesternAnimation/TeenTitans'' (which resulted in Wonder Woman taking Jason Todd's role as the one who brought down Mongul in [[Recap/JusticeLeagueUnlimitedS1E2ForTheManWhoHasEverything the adaptation of]] ''ComicBook/ForTheManWhoHasEverything''). Fortunately, DC has plenty of characters to use. As a result, viewers got to see more minor and obscure characters, like Deadman, Warlord, and the Comicbook/SevenSoldiersOfVictory, who otherwise would have probably been ignored.
** The episode "Legends" was originally supposed to feature the [[Comicbook/JusticeSocietyOfAmerica JSA]], but DC management informed the show's producers that they could not use the JSA (one: they were trying to establish the comics as a non-parody group and two: producer James Tucker later revealed on Website/{{Twitter}} in 2020 that a sticking point was [[spoiler:the JSA dying]], both of which the episode would have been counterproductive towards) and the show had to come up with the {{exp|y}}ies that were used in the episode proper. [[https://www.youtube.com/watch?v=I6wlCj-PqSk This teaser]] shows the animated JSA. However, most would agree [[Administrivia/TropesAreTools not having the real JSA made the episode better]].

* RecycledScript: Earth's mightiest heroes are suddenly lost in another dimension. Not all of them: the most powerful one and the BadassNormal were left behind. The lost heroes thought for a moment that they were in the past, but not, according to the newspapers the date is right. But some brief visions of doom tell them that something is not right. They soon find out that they are in another dimension, home of another supergroup (a CaptainErsatz of another group, which can not be used directly for network reasons). They fight each other first, then become friends, and fight against the real foe: a kid with a [[MyBrainIsBig big and grotesque brain]], so powerful that he actually created and controlled the world surrounding them. Sounds familiar? Hope so, true believer! That's the plot of ''ComicBook/TheAvengers'' [[http://marvel.wikia.com/Avengers_Vol_1_85 #85]] and [[http://marvel.wikia.com/Avengers_Vol_1_86 #86]], the debut of the Comicbook/SquadronSupreme!

* NamesTheSame:
** "In Blackest Night" is about GL on trial for the destruction of a planet in a nod to ''Cosmic Odyssey''. It has nothing to do with [[ComicBook/BlackestNight zombie superheroes]]. The name is much older than either story--it comes from a) the Green Lantern Oath ("In brightest day, in '''blackest night'''...") and b) an old Alan Moore story where one of the Five Inversions (demons) prophesizes the end of the Green Lantern Corps.
** In-universe, the hero "The Question", is given the nickname "Q". This does not mean he's a mischievous omnipotent being known best for [[Series/StarTrekTheNextGeneration tormenting French Starfleet Captains]]. Although, given Q's ability to look like anything or anyone, and his myriad abilities...He also has a similar fashion sense to Q from ''VideoGame/StreetFighterIII''.

*** Creator/GeorgeNewbern replaced Creator/TimDaly as Superman [[TalkingToYourself and Bizarro]]. Creator/MichaelRosenbaum replaced Creator/CharlieSchlatter as the Flash.

* TalkingToHimself: Many of the minor villains like Deadshot or random bystanders are voiced by the main cast members. More prominently, [[Creator/PhilLaMarr Static and Green Lantern]] have pretty lengthy conversations. Done [[https://www.youtube.com/watch?v=PETk8eBbfN0 literally]] by Batman at the end of the first ''Unlimited'' season..[[BadassCrew while yet another Batman is in the same room]].
** Hawkgirl and Fire and Livewire were all voiced by Maria Canals-Barrera.
** Dr. Moon's only speaking role was interrogating the Combs-voiced Question.
** Creator/MarkHamill voiced both Joker and Solomon Grundy in "Injustice for All", and of course they start arguing.

*** In the French dub, Stefan Godin replaced Bruno Carna for ''Unlimited''.

* TheWikiRule: Has a wiki [[http://dcau.wikia.com/wiki/DCAU_Wiki here]].

* UnintentionalPeriodPiece: Profound and sweeping changes to the DC Universe which took place mostly after the show ended - through events like ComicBook/FinalCrisis and full-blown reboots or re-reboots like ComicBook/New52 and ComicBook/DCRebirth - make the show a time capsule of sorts as an AdaptationDistillation of the DCU when it was made, mainly ComicBook/PostCrisis [[ComicBook/CrisisOnInfiniteEarths on Infinite Earths]]-inspired but taking bits from all eras.
** One of the most notable differences is having ComicBook/WallyWest as the Flash, with Barry Allen only given [[MythologyGag a brief mention]] as Wally's unnamed uncle, though Wally being a LegacyCharacter to him was obscured or omitted. After the show aired, Barry Allen was brought BackFromTheDead and has been the main Flash again in the comics and all adaptations to date.
** Similarly, John Stewart (and Kyle Rayner before him, in ''Superman: The Animated Series'') was the main Green Lantern with no Hal Jordan in sight, until he appeared as explicitly an alternate-timeline anomaly for a few minutes. Hal returned to life in the comics while the show was airing and, similar to Barry, has become the main GL again everywhere ever since. However, the show chose to make John its main GL instead of Kyle as in the comics at the time and is directly responsible for John's renewed presence in the comics ever since.
** The expansion of the Green Lantern mythos with various-colored Corps came after the show and is nowhere to be found here, while it is an integral part of the mythos now (and reflected in the later ''WesternAnimation/GreenLanternTheAnimatedSeries'', which adapts the TimmStyle into 3D CGI animation despite not being part of the DCAU). Sinestro in particular is depicted as his classic version wearing blue, while his revamp as head of the Sinestro Corps, with "Yellow Lantern" suit to match, was so popular that it's hard to imagine him as anything else now.

** Green Lantern shares a name with real-life ''Series/TheDailyShow'' host Jon Stewart, though with different spelling. A popular [[WildMassGuessing WMG]] is that it is [[SecretIdentity more than a coincidence]]...
** "In Blackest Night" is about GL on trial for the destruction of a planet in a nod to ''Cosmic Odyssey''. It has nothing to do with [[Comicbook/BlackestNight zombie superheroes]].
*** The name is much older than either story--it comes from a) the Green Lantern Oath ("In brightest day, in '''blackest night'''...") and b) an old Alan Moore story where one of the Five Inversions (demons) prophesizes the end of the Green Lantern Corps.

*** Creator/ChrisCox replaced [[Series/{{CSI}} George Eads]] as Captain Atom.

** After ''WesternAnimation/TheBatman'' began airing during the ''Unlimited'' phase, all major characters from that property other than Batman himself were suddenly verboten in ''JLU''; this was referred to as the "Bat-Embargo" by fans. Similarly, the villain Black Manta was banned when ''Comicbook/{{Aquaman}}'' [[DevelopmentHell seemed]] a go for a live-action series, as were Robin and Nightwing (aside from a silhouetted cameo from the latter in "Grudge Match") because of ''WesternAnimation/TeenTitans'' (which resulted in Wonder Woman taking Jason Todd's role as the one who brought down Mongul in [[Recap/JusticeLeagueUnlimitedS1E2ForTheManWhoHasEverything the adaptation of]] ''ComicBook/ForTheManWhoHasEverything''). Fortunately, DC has [[LoadsAndLoadsOfCharacters plenty of characters to use]]. As a result, viewers got to see more minor and obscure characters, like Deadman, Warlord, and the Comicbook/SevenSoldiersOfVictory, who otherwise would have probably been ignored.

** Creator/GreyDeLisle voiced both halves of the CaptainErsatz of the ComicBook/WonderTwins, including the male Downpour.

* ApprovalOfGod: Dave Gibbons and Alan Moore voiced their approval of the episode ''[[Recap/JusticeLeagueUnlimitedS1E2ForTheManWhoHasEverything For the Man who has Everything]]'', including the necessary changes made, giving the episode the honor of being the only adaptation of Moore's work that he's on record [[https://animesuperhero.com/toonzone-presents-interview-tribute-dwayne-mcduffie/ for actually liking]].

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* QuoteSource: See [[QuoteSource/DCAnimatedUniverse here]].

%%!!!General Trivia

*** Creator/BrianGeorge replaced Creator/BrionJames as Parasite due to [[AuthorExistenceFailure James's death]].