History YMMV / JusticeLeagueAction

** The animated debut of the Nuclear Family, members of [[ComicBook/BatmanAndTheOutsiders the Outsiders']] rogues gallery. With [[TheFifties 1950s]] cheese and all.

** [[Creator/MarkHamill Mark]] [[AsHimself Hamill]], with people praising his web short due to hilariously invoking the fact [[ActingForTwo he voices the Joker in the short itself]] as a ''plot point'', where [[{{Ventriloquism}} he throws his Joker voice]] while riding with the Joker himself to confuse a mook.

* EvilIsSexy:
** Killer Frost looks cool as she fights enemies in her SpyCatsuit while showing off her ImpossibleHourGlassFigure. Firestorm certainly notices.
** Cheetah is already gaining some fans for her appeal as a (technically) nude, athletic CatGirl.
** Circe, a VainSorceress with immense beauty who seeks to rule the world with a lover by her side.
** ComicBook/PoisonIvy, naturally. This version seems to be more classily dressed than the DCAU version.
** ComicBook/LexLuthor for some viewers, thanks to Creator/JamesWoods' voice.

** [[Creator/MarkHamill Mark]] [[AsHimself Hamill]], with people praising his web short due to hilariously invoking TalkingToHimself as a ''plot point.''

** Stargirl, who is more {{Adorkable}} and less [[AlphaBitch bossy]] compared to her Franchise/{{DCAU}} version.

* TheScrappy: The show's incarnation of Hippolyta is already earning some scorn from fans thanks to her obnoxious DoesNotLikeMen attitude and coming across as {{ungrateful|Bastard}} to the male heroes who saved her island. It doesn't help that she was willing to allow her own daughter Diana to die by Circe's hands just to ensure that the villainess would never beat her.

* BigLippedAlligatorMoment: The weirdly significant moment of Space Cabbie's GPS leaving at the end of "Barehanded" is this for those that have not seen ''WesternAnimation/GreenLanternTheAnimatedSeries'' due to ContinuityLockout.
* ContinuityLockout: The significance of Space Cabbie's GPS [[spoiler:vaguely recognizing Green Lantern and then leaving]] in "Barehanded" will likely make very little sense to those who have never seen [[spoiler:''WesternAnimation/GreenLanternTheAnimatedSeries'']].

** One of the episodes is called "''Superman Red vs Superman Blue''". The reason why the titular characters' appearance is such a surprise is because they're from the [[DorkAge fan-despised]] ''Superman Red/Superman Blue'' story arc, which was based off of an old Silver-Age "Imaginary Story" and split Superman into two EnergyBeings to try to change Superman forever ([[TheyChangedItNowItSucks it didn't last]]). The storyline has never had any actual representation on any other form of media up until this point, with the closest thing being light allusions.

* WinBackTheCrowd: From the clips released, many fans have taken a massive warming to the series, noting how they mix the action and adventure of the old DCAU with the comedy of the initial ''WesternAnimation/TeenTitans'' cartoon series, with some seeing this as a SpiritualSuccessor to the series. Some even see this as an apology for alienating fans via ''WesternAnimation/TeenTitansGo'' But because of Cartoon Network doing squat to advertise the series, not many fans could actually see the show and there are several people that are unaware of the show's existence.

** On ''WesternAnimation/UltimateSpiderMan'', Creator/TaraStrong voiced Mary Jane Watson who, unlike other versions of the character, aspired to be a reporter and was ''not'' in a romantic relationship. Here, she voices Lois Lane, who ''is'' a reporter, and ''isn't'' in a relationship with Superman.

* WhatAnIdiot: In "Luthor in Paradise", Circe had managed to turn Batman, Wonder Woman and Superman into trees, but not before finding out that Lex Luthor planned to betray her. Infuriated by this, she proceeds to take the oculus away from him.\\
'''You'd expect:''' With Lex Luthor at her mercy, she would leave the heroes as they were and deal with Lex herself. After that, she could escape without ever having to worry about Wonder Woman again.\\
'''Instead:''' Circe reverses her spell on all three heroes and lets them have their way with Lex while she tries to sneak off. Considering only one of them even needs to bother with catching Lex, she doesn't get far.

* MagnificentBastard: [[Characters/BatmanTheJoker The Joker]] is the diabolical criminal mastermind and ArchEnemy of Batman. Joker's laughing gas bomb remains hidden in Gotham until 5 minutes before it blows, where Joker [[GracefulLoser is undeterred when it is finally found]]. Upon acquiring a Mother Box, Joker breaks Lex Luthor out of prison and takes treats him to the "Best Day Ever", where his [[BatmanGambit mysterious motive is]] attracting superheroes from all over the world to follow them to Lex's hideout where a powerful bomb awaits, so all the heroes will be caught in the blast radius. After kidnapping Batman, Joker leaves a trail of clues to his captive, which only the Riddler can make sense of, but even he is outsmarted by the Joker who leaves a trap that would activate and kill Batman if a riddle was correctly answered, knowing Riddler cannot resist answering. In spite of his penchant for mischief, Joker can just as easily [[VillainsOutShopping be doing something harmless like attending Booster Gold's Watchtower Tour]]. Just as cunning as ever, this Joker also shows himself to be [[AdaptationalNiceGuy far less cruel and sadistic]] than usual.

* TheyWastedAPerfectlyGoodCharacter: Plenty of Justice League members only appear sparingly, but with just two speaking appearances, Vixen stands out as an underused character after her fighting scenes in "Garden of Evil".

* TheyWastedAPerfectlyGoodCharacter: Plenty of Justice League members only appear sparingly, but with just two speaking appearances, Vixen stands out as an underused character after her fighting scenes in "Garden of Evil."

* EsotericHappyEnding: The ending to "All Aboard the Space Train," has Jonah Hex deciding to live on a desert planet devoid of all intelligent life since he feels that it's where he belongs now due to being unable to return to his own time period. However, there's also no sign of food, water, shelter, or other basic human necessities to allow him to live a long fulfilling life as far as we know.

* HarsherInHindsight: In the "Lasso of Lies" short, Wonder Woman uses the Lasso of Truth on Booster Gold, and during his truth-compelled rant he mentions that he's "Terrible at caring for the things he loves". This becomes harsh after watching the episode "She Wore Red Velvet" where we learn that [[spoiler:Booster is in love with an heiress from his time, and that he was going to marry her, but he was broke at the time, so during the wedding, he traveled back in time to gain enough money to support the two of them. She became the villain Red Velvet in the future, pursuing him for revenge, and everyone assumed it was for not returning and so Batman and Wonder Woman rush him back to the altar... and it turns out she doesn't hate him for not returning, but for being the ''worst husband ever.'' When Red Velvet tells the younger Margo what it's like, Margo takes off her wedding ring and dumps Booster after hearing some of the things her future self says. Red Velvet fades, having never become a villain because she was better off without Booster]].

** On ''WesternAnimation/UltimateSpiderMan'' , Creator/TaraStrong voiced Mary Jane Watson who, unlike other versions of the character, aspired to be a reporter and was ''not'' in a romantic relationship. Here, she voices Lois Lane, who ''is'' a reporter, and ''isn't'' in a relationship with Superman.

* CrazyAwesome: ComicBook/BoosterGold's watched ''Film/JurassicPark'' and decided to use time travel to start an actual one up.

** Lashina only appears in one episode and has no dialogue. However, she might be Darkseid's most popular minion due to her combat skills and pausing to bow for a crowd of people who thought that a battle was [[AllPartOfTheShow part of a show.]]

* TheFireflyEffect: Many fans fear this, due to the general [[ScrewedByTheNetwork screwing over]] of action cartoons, and the death of ''WesternAnimation/DCNation'' fresh in many minds. They were sadly proven right when the series was quietly cancelled after its first season.

* BrokenBase: The revelation that [[spoiler:Superman and Wonder Woman are dating]] has some fans upset that [[spoiler:Steve and Lois are being sidelined]], as well as the fact that it happened in the polarizing ComicBook/New52. They do bring up that they have feelings for [[spoiler: Steve and Lois, but they seem to like the super hero identities over their civilian ones. Plus in "Race against Crime" Lois and Superman do have a brief flirting session.]]

* BrokenBase: The revelation that [[spoiler:Superman and Wonder Woman are dating]] has some fans upset that [[spoiler:Steve and Lois are being sidelined]], as well as the fact that it happened in the polarizing ComicBook/New52. They do bring up that they have feelings for [[spoiler: Steve and Lois, but they seem to like the super hero identities over their civilian ones.]] [[spoiler: Plus in "Race against Crime" Lois and Superman do have a brief flirting session.]]

* FriendlyFandoms: The show has gotten on pretty well with fans of ''WesternAnimation/JusticeLeagueUnlimited'' and ''WesternAnimation/BatmanTheBraveAndTheBold''. Both shows made a similar point of showcasing various DC heroes and villains [[LimeLightSeries both obscure and popular]] in various action packed adventures, with fans of the former particularly appreciating the solid animation, characterization, and action scenes and fans of the latter appreciating the show taking a more [[RuleOfFun fun]] and [[LighterAndSofter light-hearted]] approach towards the DC universe while still knowing when to get serious.