History YMMV / BigHero6TheSeries

** Fans hopped off the Chris/Wasabi ship after Chris was revealed to be just as evil as Liv[[spoiler:/Di]]. Even in the AlternativeCharacterInterpretation of Chris' actions are related to his boss [[spoiler:implanting ideas into his mind]], fans felt like any possible crush Wasabi may have had on Chris was treated poorly and didn't head anywhere in the end (since Chris and Liv ended up being PutOnABus at the end of the "City of Monsters" arc).

** Obake used to have a prominent dorky side in his youth, as shown in the flashback from "Mini-Max" where he excitedly grinned at Professor Granville in order to show her his work. Even if he grew up to become a much more cold and sinister individual, he kept a part of his past excitable streak, like in the scene he tells Hiro he cannot wait for him to become his apprentice and create things together.

** Underneath her grumpiness and aloof demeanor, Karmi hides a ''huge'' dorky side. Best proven whenever she gets excited by something bio-tech or Big Hero 6 related (especially in regards to her beloved "Captain Cutie".) She also loves cute stickers and puts them on her virus' containers. That side of her warms her up to Honey Lemon, and eventually Hiro.

** Supersonic Stu. He's dimwitted and childish in nature, that added with his innocence and cheerfulness makes him a lovable sweetheart.
** Hardlight sees his world like a video game, and he can be shown being genuinely geeked out about fighting superheroes.
** High Voltage are dangerous criminals, yes, but they're quite endearing and excitable, mostly Juniper. The top of which is "Something's Fishy" when they try to be normal civilians. That's one of the reason they're one of Big Hero 6's [[FriendlyEnemy friendliest foes.]]

** Krei is a ''lot'' meaner in the series than in the movie. Was he always like this, or did the events of the movie leave him feeling invincible? For the former, the movie always had him talking in public, so he had to be polite. On the other hand, he openly insulted Globby and had the audacity to blackmail Big Hero 6, both of which could've risked his safety. Either is still possible.

*** The season 1 finale reveals that he [[spoiler:suffers from a brain injury that makes him unable to tell right from wrong as a result of an experiment gone wrong. The revelation throws into question how much of Obake's actions are of his own will. Was he an unfortunate victim of circumstances where his accident was his StartOfDarkness? Or was Obake already a science-obsessed maniac from young, and the accident was merely a catalyst that allowed him to cut loose? Obake seems fully aware of his condition, but refuses to have it treated since he actually [[EvilFeelsGood enjoys the freedom from a moral compass]].]]
*** [[spoiler: When Obake decides to seal his fate in his collapsing lair and refuses Baymax's aid, he takes off his chip from Baymax's system and pushes him to go save Hiro. Despite his inability to recognize right from wrong and his pleasure into villainy, Obake died doing the right thing. Did he [[DyingAsYourself regain some morals before dying]]? At the same time, his mercy towards Hiro, whose potential he acknowledges, can be seen as consistent with his belief that scientific progress trumps all, making his good deed appear to be a case of MoralSociopathy.]]
** Is Chris as evil as his boss on his own will? Or is he only evil because he's her HumanPet and she implanted her own lack of morality into him, and he doesn't know better than what he has from his programming?

** In the same finale, [[spoiler: Chief Cruz, who has been obsessed with bringing down Big Hero 6 for the entire season, changes his entire world-view and gives up on antagonizing them after they save his daughter. Given that he blamed a superhero for a villain placing his father in danger, it's odd that he didn't blame Big Hero 6 for Megan's predicament, as it ''could'' be argued that it happened because of them. The only difference between what happened to his father (which sparked his anti-superhero crusade) and what happened to his daughter (which ended it) is that his daughter actually survived.]][[note]]It could be argued that this was because Megan’s life was threatened by the Buddy Guardians, whom were commissioned by Chief Cruz on his crusade against superheroes. He may have blamed himself for going too far and bringing in the Buddy Guardians that could have very well killed Megan, and he was definitely grateful to BH6 for saving her.[[/note]]

** Some episodes of the series show Hiro using his glove magnets in more effective ways than latching on to Baymax, which makes up for Hiro being the brainy, but powerless member of the team in the movie. Season 2 finally gives him his own distinct WeaponOfChoice in discs he can throw around that attach to objects and that have a magnetic pull, giving him more combat utility.

** Karmi starts off as a BaseBreakingCharacter. But as of Season 2's mid-season finale, [[spoiler:the trauma she's been put through which caused her to be PutOnABus]] caused a lot of fans to feel bad for her and appreciate her CharacterDevelopment.

** The theme song definitely helps capture the action sci-fi tone of the series.
** The background songs that plays when High Voltage is on screen is definitely catchy. And then there's Barb's VillainSong from "Something's Fishy". While Big Hero 6 is far from a musical comedy like ''WesternAnimation/TangledTheSeries'', Barb completely ''nailed that song''.

** Karmi. Fans either hate her for being a BitchInSheepsClothing and being overly harsh to Hiro and Baymax to an extent with little provocation while being obsessively in love with Hiro's superhero alter-ego (not to mention [[ReplacementScrappy making it unlikely for comic book character, Marys Iosama, to appear]]), or fans love her for her FriendlessBackground and potential for CharacterDevelopment, not to mention frequent moments where she is funny (the absolute peak of which being the episode [[MostFanficWritersAreGirls "Fan Friction"]]). Seems to have become less contentious in Season 2, where her CharacterDevelopment has so far made her more amiable to Hiro and co. and the high stakes around her have made fans worried for her well-being. Look at AuthorsSavingThrow and RescuedFromTheScrappyHeap.
** Richardson Mole, Fred's comic book rival, is either too smug and annoying, or funny in an "I don't care what others think of me" kind of way. The episode "Big Hero 7", which is also divisive, didn't help matters. "Mayor for the Day" makes him even more petty, giving him [[WesternAnimation/TheIncredibles Syndrome]] vibes.
** Each member of the titular team is a base breaking character in their own way.

*** One complaint some people have with [=GoGo=] is how she seems to go through character ''regression'' with her still softer moments being downplayed in favor of upping her tough side. With that said, she still has fans who appreciate when she's kinder.
** Noodle Burger Boy is also one. Due to being a [[CreatorsFavorite crew favorite]], some fans who find him annoying didn't approve of him becoming the new BigBad of Season 3, while others who has loved him since Season 1 are excited to see where this new route will lead the character.

** In a similar vein to the movie, the show having almost no basis to the comics it's based on, and not making any connections to Marvel characters, is either a good choice to let the show stand on its own, or feel that the potential could be better utilized with a SharedUniverse.

** The art style is also up for debate. One side thinks it looks like Flash garbage (even though this is hand drawn) and it's too simple and stiff. The other side doesn't mind it, and thinks it looks great, being reminiscent of the comic books it's based on. Those in favor of the latter point to ''WesternAnimation/TheSpectacularSpiderMan'', which has a simple, yet bold art style, and feel that the simpler art style here is to help make the action scenes more enjoyable to watch, like here.
** Unlike most other action shows that utilize a core team, the titular team appears together in every episode. One side argues that there should be episodes that don't have all of the team together in order to enhance the quality of the more character-specific episodes, while another side argues that there are still plenty of episodes that give other characters time to shine even with the team together in every episode. Season 3 attempts to fix this by having only a few members of the team make appearances in episodes, but given the controversial shift to a comedic focus, whether it works or not is up to the viewer.

* CryForTheDevil: Obake may be a MadScientist [[spoiler:who's willing to kill millions ForScience, but you can't help but feel bad for him when it's revealed that he's suffering from a brain injury that makes him unable to differentiate right from wrong. You'll ''definitely'' feel sorry for him when his plan is thwarted and he suffers a VillainousBSOD that causes him to apparently be DrivenToSuicide.]]
* DesignatedVillain: Both Ned Ludd and Mel Meyer are not actual supervillains. They are both actually quite nice and good people, but both of their goals have a dangerous motive that puts them against Big Hero 6:
** Ned Ludd is a technophobe hermit who due to losing his sanity over the years spent alone in the woods, saw Baymax as a threat against humanity and thought was doing the right thing by attempting to push him off a cliff. (thankfully, CharacterDevelopment helps him in future episodes).

** Globby, due to his likable personality, unique application of his abilities, and [[HeelFaceTurn eventual redemption]].
** The instant Hardlight was introduced, he immediately got a positive response from fans due to being simultaneously a tough opponent, ''and'' an {{adorkable}} nerd with hilarious [[DeadpanSnarker sarcastic quips]]. [[EvilIsSexy And he's really not ugly]].

** High Voltage are the first female villains to be introduced, and have immediately received positive reception with their comical gimmicks and dance moves ([[{{Leitmotif}} including their own soundtrack]]).

** Chris is referred as handsome by many characters, and is Liv Amara's right-hand man.
** Momakase is an evil {{ninja}} with a lot of charisma, a soft-spoken sultry voice and is definitely not unattractive.

** Cobra, who is a charming and gorgeous FemmeFatale. She's basically the human personification of the SnakesAreSexy trope.

** Momakase is referred as "Knife Wife" or "Knife Mom" by her fans.

* GrowingTheBeard: The pilot movie retreads a lot of ground (due to being an extended version of the film's epilogue), and first five episodes of the series proper are rather by-the-numbers. "Failure Mode" is the point where the series starts putting greater emphasis on the MythArc, and also becomes more creative with how the heroes and villains outsmart each other.

** In "Issue 188", Wasabi jokes to Hiro to tell Karmi he has a clone so she doesn't doubt he's the superhero she's crushing on, to which Hiro replies Karmi will see through it. Then comes Season 2 where [[spoiler:the BigBad is an [[EvilDoppelganger evil clone]]]], and Karmi [[spoiler:never doubted for a second of Liv/Di's true colors]].
** In "The Hyper-Potamus Pizza-Party-Torium", Hiro being saddened over his friends potentially finding jobs in another city hits harder when you remember that people he cared about has always abruptly lived his life before; either they died (his parents and Tadashi), or they had to move out ([[spoiler:Karmi]]), and there was nothing Hiro could do to stop it.
* HeartwarmingInHindsight: Creator/StanLee's final time portraying Boss Awesome happened to be the one episode where [[HesBack Boss Awesome suits up one last time to help BH6 apprehend his villains personally]]. Though Mr. Frederickson is confirmed to avert TheCharacterDiedWithHim, it's heartwarming to know Stan went out a hero.
* SugarWiki/HeReallyCanAct: Creator/AndrewScott is often known for playing [[HateSink slimy and despicable villains]]. However, fans were surprised by what an [[AlasPoorVillain immensely heartbreaking]] performance he made [[spoiler:in Obake's final moments]].

** How fans deal with [[spoiler:Obake's supposed death]]. Helps that his fate is vague and they NeverFoundTheBody.
** Just like with [[WesternAnimation/BigHero6 the movie]], some fans are still convinced that Tadashi isn't actually dead, theorizing he might be revived or cloned by the BigBad{{s}}.

** One of the villains in the series is High Voltage, a pair of villians that attack with electricity by dancing. Sounds like they got inspiration from [[VideoGame/PlantsVsZombiesHeroes Electric Boogaloo]].

*** Even ''funnier'' when in "Hardlight", she freezes police officers '''on purpose''' this time so they don't arrest the team. [[ApologeticAttacker Though she does apologize to them]] due to [[NiceGirl how she is.]]
** In "Baymax Returns", [=GoGo=] shoots down Fred's enthusiasm of getting the team back together by telling him superheroes and villains don't exist, but then in "Fred's Bro-Tillion", she learns Fred's dad was a superhero with many enemies.
** A theory in the ''WesternAnimation/KimPossible'' fanbase was that Kim was a [[RoboticReveal robot]] built by her father, who is a rocket scientist. ''Big Hero 6: The Series'' is created by the creators of ''Kim Possible'' and Kim shares her voice actress with Trina, who turns out to [[spoiler:be Obake's robot "daughter" who he built.]]

** Globby's relationship with Felony Carl in season 2. Globby's realization that Felony Carl is his OnlyFriend at the end of season 1 was accompanied with the line "If anything thing happens to me, tell Felony Carl he was my whole list," which in a slightly different context would be the closest the show has come to a LoveConfession from anyone. The bar is raised even higher in the first half of the series finale, "Krei-oke Night", when they perform a love duet.

** Richardson Mole is a SpoiledBrat who does everything he can to make Fred's life a misery, and constantly flirts with Gogo (to her disgust). The team as a whole find him more repugnant than the supervillains they regularly face.
** Chief Cruz tends to be hated more than the regular rotation of supervillains due to his JerkAss behavior, obstructive belief in the SuperheroParadox, ungrateful behavior when Big Hero 6 help him, and his motivation [[UnintentionallyUnsympathetic not justifying]] his crusade. He tellingly isn't featured at all in the final season.
* LauncherOfAThousandShips: Hiro is shipped with pretty much every girl in his age range, such as Karmi [[note]]they have a mutual passion for science even though she's a BaseBreakingCharacter[[/note]], Trina [[note]]they have a mutual passion for robotics though given that she's [[spoiler:Obake's robot daughter]], it's pretty much sunk, but it hasn't stopped anyone[[/note]], and Megan [[note]]she's the nicest of the three, but has a police chief father who hates superheroes[[/note]].

*** In "Fate of the Roommates", Honey prepares to move out of [=GoGo=]'s apartment, which would mean that the girls stop living together but would still see each other a lot in the SFIT and in their superhero life and while just hanging out. Yet, [=GoGo=] is upset as if they were breaking up, and [[EveryoneCanSeeIt other characters comment on it]]. [[CantSpitItOut She needs quite some effort and time to work up her courage and ask Honey to stay]]. Honey gladly agrees, and the girls share a tender hug.

* LoveToHate: Both {{Big Bad}}s, Obake and Liv[[spoiler:/Di]]. Although both commit horrible actions during their reign as the main antagonist of their respective seasons, fans can't bring themselves to hate them, finding them extremely good-written villains. Although it goes up a notch for Liv, as contrary to her, Obake showed himself to be extremely vulnerable [[spoiler:in his final moments]] and a case of TragicVillain. Liv, for herself, is a {{sociopath}}ic ManipulativeBitch who commits horrendous actions ForTheEvulz. Some fans state that as much as they love Liv as a villain, they can't bring themselves to ever forgive her for [[spoiler:manipulating and mutating poor Karmi and causing her departure from the second half of the season]].
* MagnificentBastard: [[BigBad Obake]], real name [[spoiler:Bob Aken, was once the top student of Professor Granville. After an unsupervised lab experiment ended in disaster, Obake was left with a brain tumor that left him incapable of differentiating right from wrong]]. Fascinated by artist/scientist Lenore Shimamoto’s work, Obake flawlessly manipulates both heroes and villains alike into acquiring Shimamoto’s research as well the secret identities of Big Hero 6, taking close interest in Hiro Hamada. He secretly observes and gauges the boy’s growth from the shadows, even going so far as disguising himself as [[spoiler:Hiro’s dead brother]]. In the season finale, Obake reveals his grand plan to [[spoiler:recreate Shimamoto’s failed experiment that caused the Great Catastrophe, and [[InTheirOwnImage rebuild San Fransokyo into something “perfect”]]. He takes control over Baymax and captures Hiro in hopes of swaying him into becoming his [[WeCanRuleTogether protégé once the dust settles]]. Thwarted by the heroes, a heartbroken Obake lets himself [[GoingDownWithTheShip go down with his collapsing lair]], but not without freeing Baymax from his control to go back to Hiro and save the boy who he deemed his equal]]. A VisionaryVillain whose charming brilliance is rivaled by his ruthlessness, Obake establishes as Big Hero 6’s most diabolical foe to date.
* MisaimedFandom: Once again, there are fans who say that Tadashi should return and be more focused on in the series (ex. he should have been TheSixthRanger in "Big Hero 7" as opposed to [[spoiler:Richardson]]) despite the fact that the {{Aesop}} of the story is to keep your loved ones in your thoughts while you move on with your life, with the series continuing that lesson by showing the characters moving on with their lives.
* {{Moe}}: The show definitely uses this quite effectively:
** Hiro is still this as in the movie, where he can be quite an Main/{{adorkable}} nerd and occasionally socially awkward when talking to girls.

** Karmi falls into this when she acts like an {{adorkable}} nerd excited about science and an bubbly (and relatable) {{fangirl}}.

** Professor Granville eventually becomes this when she loosens up, when showing her Main/GenkiGirl tendencies and a hidden [[{{Adorkable}} dorky side]].

** Fans felt that Obake crossed it when he [[spoiler:tricked Hiro into thinking that his dead brother was alive.]] This is even treated as one in-universe by [=GoGo=] and Wasabi, thinking that Obake really crossed the line this time.
** It gets ''much'' worse in the season finale, [[spoiler:where he plans on recreating the Great Catastrophe to make an artificial star, despite knowing full well it will destroy San Fransokyo and kill millions of innocents]].
** [[spoiler:Liv Amara's clone Diane]] crossed it in "City of Monsters" when she [[spoiler:forcibly turned her 16-year-old intern Karmi who idolized her into a monster and kidnapped Hiro and Baymax to force them to cure the real Liv Amara. When they succeed, she tries to mutate Hiro and then force the monster Karmi to kill him since HeKnowsTooMuch.]]
* {{Narm}}: Big Hero 6 apparently having secret identities despite their costumes clearly showing that they're the same person (except for perhaps Fred[[note]]Who still seems to take every opportunity to pop his head out of his costume, with little regard to who's present to witness it[[/note]]) and numerous characters already knowing who they are in the film. Though this is something carried over from the end credits of the film, as it was kept vague as to whether or not the media knew that Big Hero 6 were college students. Possibly a case of StatusQuoIsGod in case the movie gets a sequel that wants to address this.

** Comes back in "[[Recap/BigHero6TheSeriesS1E21CountdownToCatastrophe Countdown to Catastrophe]]" when [[spoiler:each member of the gang gets a DramaticUnmask after Professor Granville reveals that [[SecretSecretKeeper she knows full well]] that they're Big Hero 6. And later, Megan figures out Hiro's identity by connecting the dots from the SFIT fire, and matches Hiro's face out of costume to his face in costume.]]

* PortmanteauCoupleName: It's lampshaded more than once in "Fan Friction". Karmi calls her pairing with "Captain Cutie" "Karmutie". Fred, who gives a bunch of ship names among the gang, like "Gogosabi", "[[HoYay Fredsabi]]" and Honeysabi. He also asks Momakase if her ship name with Obake is called "Momobake" or "Obakase". Though in the actual fandom, there's quite a chunk of these:

* RescuedFromTheScrappyHeap: Karmi. She was a character with [[BaseBreakingCharacter mixed responses]] in the first season due to her harsh behavior towards Hiro and Baymax. But as Season 2 goes on, CharacterDevelopment hits her and considering she's in the middle of the Sycorax mess unbeknownst to her, fans now worry for her safety. [[spoiler:This worry is justified when Liv gives Karmi an "upgrade" against her will in City of Monsters.]] After [[spoiler:being PutOnABus]], people who previously hated her now appreciate her CharacterDevelopment and [[spoiler:[[TheBusCameBack hopes she comes back]]]]. [[spoiler:They also appreciate her cameo in "Legacies" and were delighted by her return in "Big Chibi 6", that some consider one of the best episodes of the new 11-minute format]].
* TheScrappy: Chief Cruz for being the stereotype of the law enforcer who hates superheroes, despite the fact that Big Hero 6 had saved the city countless times. Even when the news mentions that crime has gone down to an all-time low thanks to the team in the first episode of Season 2, his illogical deduction that superheroes attract supervillains makes his hatred of superheroes seem to be out of nothing but spite. The hate towards him grew when he [[UngratefulBastard shrugs off Big Hero 6 saving his life and still wants them arrested]]. Not only that, but his annoying OverprotectiveDad tendencies towards Hiro for getting close to his daughter comes off as hypocritical considering that he tries to date Aunt Cass. Even after his backstory has been revealed, it made fans ''dislike him even more'' as his backstory is cliché and makes his hatred of superheroes selfish and mostly motivated by pride. While Megan Cruz is at least mentioned in Season 3, her father never makes any major appearances, quite possibly due to this tepid reaction.
* SeasonalRot: Some would say the show fell into this after the "City Of Monsters" two parter in Season 2, mainly due to the unengaging arc involving the team becoming fugitives, the team (excluding Hiro and Baymax) having rather minimal CharacterDevelopment, plot lines involving characters like Trina that had potential but were executed poorly, and (thanks to ExecutiveMeddling) Season 3 having a shortened season and placing more emphasis on comedy over storytelling and CharacterDevelopment.

** Also Karmi/Megan, who did not meet since [[spoiler:Karmi gets PutOnABus at the end of the City of Monsters arc and only reappears for one episode in Season 3 and Megan not appearing at all in Season 3]].
** There are some fans who ship Juniper and Megan, who maybe did not interact, but appeared in the same episode and High Voltage (indirectly) ruined the dance night at Megan's school.
* ShipToShipCombat: Especially after "Big Chibi 6", fans are divided over whether Hiro should end up with Karmi, who clearly now has feelings for Hiro (his real self, not "Captain Cutie"), or Megan.

** Fred putting Wasabi's cold-pressed juice back in his cup after it's spilled on the floor (and on Baymax) in "The Fate of the Roommates". There's a good view of a band-aid and a ''toe nail'' in it. Wasabi's reaction ([[VomitDiscretionShot running to the restroom to throw up]]) is definitely justified.

*** After spending the episode manipulating Fred and humiliating him in front of his cousin Olivia (whom Fred has a crush on), Richardson gets locked in a piano and forgotten there after the Supersonics attack.

** One lament that is carried over from the movie is that the series doesn't focus very much on [=GoGo=], Wasabi, Honey Lemon, and Fred, instead continuing to focus mostly on [[SpotlightStealingSquad Hiro and Baymax]]. Whenever the series does focus on them, they rarely get any lasting form of character growth, even in the episodes focusing on them.
** Tadashi's influence on the cast and history at SFIT is rarely brought up. Particularly in "Obake Yashiki", the episode is centered more around the comedic hijinks of the team dealing with their {{Absurd Phobia}}s rather than the emotional impact of Hiro facing an apparently BackFromTheDead Tadashi.

** Hiro and Tadashi's parents are stated to have [[ParentalAbandonment died when Hiro was three years old]] in the movie. All that is known of them is a picture of their father with their pregnant mother appearing '''only''' in the Korean release of the movie. The series could've been a perfect occasion of seeing more of them as {{Posthumous Character}}s with flashbacks and seeing how Aunt Cass grieves her sister and brother-in-law while struggling to now raise her surviving nephew alone. They never got a single mention since the brief one from the movie.
** Chief Cruz's second-in-command, Detective Kato, was shown letting Big Hero 6 rescue his chief when he was kidnapped by Hardlight in the latter's debut episode, and pointed out to him that Big Hero 6 saved his life. It could've been a perfect occasion to have a reluctant member of the force that doesn't agree with his boss on his treatment of heroes and could've been a potential ally. But in his next appearance, all of those precedent traits are erased and shows him having just as much scorn and desire to arrest the heroes than his chief does.

** Sirque is an attractive AffablyEvil ClassyCatBurglar acrobat who [[spoiler:stole Krei Tech's Project Silent Sparrow portal technology to commit heists,]] who only appears in one episode before "Go Go the Woweroo" reveals she was arrested offscreen.

** Professor Granville and [[spoiler:Obake's]] relationship is never explored in depth aside from flashbacks, and they don't meet each other until the final episode of Season 1. It's not helped by [[spoiler:Obake dying afterward. [[NeverFoundTheBody Probably]].]]
** Baymax says [[spoiler:Obake's]] condition is treatable. Wow, there's a ton of possibilities for CharacterDevelopment! Too bad, [[spoiler:he refuses to be treated and ([[NeverFoundTheBody most probably]]) dies]] in the Season 1 finale.
** ''City of Monsters'' reveals that [[spoiler:Liv Amara we knew is actually an evil clone Di, while the real Liv is terminally ill and in stasis.]] How does Granville, [[spoiler:her old friend,]] feel about it?
** We don't see Krei's reaction to [[spoiler:the Liv that he knew was a clone all along.]]
** Chris hitting on Wasabi could've been expanded. Did he really have a thing for him? Or was he faking it?
** [[spoiler: Monster!Karmi could've had a TheDogBitesBack moment and get back at Di for everything she's done to her.]]

** Trina only appeared three times before her BigBad role in "Legacies", two of them being minor appearances that barely reference her revenge scheme, which makes her being the antagonist in the finale too rushed. In the same vein, Trina shares only ''one scene'' in total with Obake before [[spoiler:his demise]] in Season 1. "Legacies" could've been a ''perfect'' occasion for a flashback that covered more ground on their father-daughter bond.
** Similar to ''WesternAnimation/LiloAndStitchTheSeries'', the show in general has received a lot of indignation from fans who were expecting the series to be as emotional as the movie. Prime examples include more flashbacks of Tadashi, how Hiro’s parents died, how the nerd gang came together, learning their own backstories and real names and how Baymax came to be.
* ToughActToFollow: While the show is well received by many people, it's not as fondly looked upon as the creators' previous work on ''WesternAnimation/KimPossible'', with some people thinking it's trying too hard to recapture the magic of what made it work. This could also be said for the [[WesternAnimation/ThePenguinsOfMadagascar previous]] [[WesternAnimation/MonstersVsAliens2013 works]] in between the two shows, but it's really noticeable here, especially from "City Of Monsters" onward.

* TheUntwist: Many fans had guessed that Liv Amara (or rather [[spoiler:Diane]]) would be the BigBad in Season 2. Perhaps expecting this to happen, the show does not make a big deal about this revelation and she's just casually shown to be the villain at the start of "Seventh Wheel".
* WhatCouldHaveBeen: According to the showrunners, Karmi was meant to have a much bigger role in Season 3, including her own arc to follow up on her brief reapparance in "Legacies", but due to the format change (going from 22-minute to 11-minute episodes and more of a focus on comedy), it had to be cut.

* WinBackTheCrowd: Of all the Marvel cartoons released this decade, this has garnered the most positive reception not only due to the movie's positive reception, but also how, just like the movie, Marvel has little involvement, leaving Disney itself to be more focused on crafting its own world with the series.

** Also Karmi/Megan, who did not meet since [[spoiler:Karmi gets PutOnABus at the end of the City of Monsters arc]].

* CryForTheDevil: Obake may be a MadScientist [[spoiler:who's willing to kill millions ForScience, but you can't help but feel bad for him when its revealed that he's suffering from a brain injury that makes him unable to differentiate right from wrong. You'll ''definitely'' feel sorry for him when his plan is thwarted and he suffers a VillainousBSOD that causes him to apparently be DrivenToSuicide.]]

*** Hiro and Baymax are the most notable offenders. Some fans appreciate their relationship and quirks, while others are tired of them always taking [[SpotlightStealingSquad the spotlight]] for majority of the series' episodes while their teammates are relegated to the sidelines. They felt that it was time for the teammates to shine, given that the movie had already delved into the two's relationship enough.

* FoeYay:

** Wasabi and Chris' relationship definitely counts, considering Wasabi is a hero and Chris is [[BigBad Liv Amara's]] [[TheDragon right-hand man]].

** Wasabi qualifies as well; he's paired with [[VitriolicBestBuds Gogo]], [[HoYay Fred]], Honey Lemon, Tadashi, and [[FoeYay Chris]]. [[AscendedFanboy He's even paired with half of 4 2 Sing!]]

* NoYay: While Obake's fixation on Hiro can be interpreted as FoeYay, it's more disturbing when you realize how Obake is obsessively stalking Hiro, such as observing his everyday life to create a RobotGirl that ''flirts with him''. There's also the fact that [[{{Squick}} Obake is an adult in his 30's and Hiro is fourteen]].

* SeasonalRot: Some would say the show fell into this after the "City Of Monsters" two parter in season 2, mainly due to the unengaging arc involving the team becoming fugitives, the team (excluding Hiro and Baymax) having rather minimal character development, plot lines involving characters like Trina that had potential but were executed poorly, and (thanks to executive meddling) season 3 having a shortened season and placing more emphasis on comedy over storytelling and character development.

** Some fans feel that Hardlight would've been a more fitting BigBad for Season 3 than Noodle Burger Boy due to the former's debut episode setting him as a major threat to the heroes.

** ''Fred the Fugitive'' reveals that there was a reason why the Cruz family moved to San Fransokyo. This is never explored later, with Chief Cruz and Megan ''not even appearing in Season 3.''

** In the same finale, [[spoiler: Chief Cruz, who has been obsessed with bringing down Big Hero 6 for the entire season, changes his entire world-view and gives up on antagonizing them after they save his daughter. Given that he blamed a superhero for a villain placing his father in danger, it's odd that he didn't blame Big Hero 6 for Megan's predicament, as it ''could'' be argued that it happened because of them. The only difference between what happened to his father (which sparked his anti-superhero crusade) and what happened to his daughter (which ended it) is that his daughter actually survived.]]
[[note]]It could be argued that this was because Megan’s life was threatened by the Buddy Guardians, whom were commissioned by Chief Cruz on his crusade against superheroes. He may have blamed himself for going too far and bringing in the Buddy Guardians that could have very well killed Megan, and he was definitely grateful to BH6 for saving her.[[/note]]

%%It could be argued that this was because Megan’s life was threatened by the Buddy Guardians, whom were commissioned by Chief Cruz on his crusade against superheroes. He may have blamed himself for going too far and bringing in the Buddy Guardians that could have very well killed Megan, and he was definitely grateful to BH6 for saving her.%%

** "City of Monsters" reveals that [[spoiler:Liv Amara we knew is actually an evil clone Di, while the real Liv is terminally ill and in stasis.]] How does Granville, [[spoiler:her old friend,]] feel about it?

** Karmi. Fans either hate her for being a BitchInSheepsClothing and being overly harsh to Hiro and Baymax to an extent with little provocation while being obsessively in love with Hiro's superhero alter-ego (not to mention [[ReplacementScrappy making it unlikely for comic book character, Marys Iosama, to appear]]), or fans love her for her FriendlessBackground and potential for CharacterDevelopment, not to mention frequent moments where she is ActuallyPrettyFunny (the absolute peak of which being the episode [[MostFanficWritersAreGirls "Fan Friction"]]). Seems to have become less contentious in Season 2, where her CharacterDevelopment has so far made her more amiable to Hiro and co. and the high stakes around her have made fans worried for her well-being. Look at AuthorsSavingThrow and RescuedFromTheScrappyHeap.

* TheScrappy: Chief Cruz for being the stereotype of the law enforcer who hates superheroes, despite the fact that Big Hero 6 had saved the city countless times. Even when the news mentions that crime has gone down to an all-time low thanks to the team in the first episode of Season 2, his illogical deduction that superheroes attract supervillains makes his hatred of superheroes seem to be out of nothing but spite. The hate towards him grew when he [[UngratefulBastard shrugs off Big Hero 6 saving his life and still wants them arrested]]. Not only that, but his annoying OverprotectiveDad tendencies towards Hiro for getting close to his daughter comes off as hypocritical considering that he tries to date Aunt Cass. Even after his backstory has been revealed, it made fans ''dislike him even more'' as his backstory is cliché and makes [[FreudianExcuseIsNoExcuse his hatred of superheroes selfish and mostly motivated by pride.]] While Megan Cruz is at least mentioned in Season 3, her father never makes any major appearances, quite possibly due to this tepid reaction.

* WhatCouldHaveBeen: According to the showrunners, Karmi was meant to have a much bigger role in Season 3, including her own arc to follow up on her brief reapparance in "Legacies", but due to the format change (going from 30-minute to 15-minute episodes and more of a focus on comedy), it had to be cut.

* FanNickname:
** "Scone Daddy" or "Glowstick Man" for Obake.
*** The robotic copy of him that appeared in "Countdown To Catastrophe" is called "Robake".
*** His younger self is sometimes called "Emobake" due to Obake having an EmoTeen haircut.
** "[=NBB=]" for Noodle Burger Boy.
** Momakase is referred as "Knife Wife" or "Knife Mom" by her fans.

* HilariousInHindsight

* InSeriesNickname:
** Karmi calls Hiro's alter-ego "Captain Cutie". Characters in-universe and even fans of the series use the nickname as well.
** Due to his nature as TheScrappy, fans who dislike Chief Cruz or {{love to hate}} him adopted Hardlight's in-series habit to call him "Chief Snooze".

* Main/{{Moe}}: The show definitely uses this quite effectively:

** {{Lampshaded}} in a big way in "Issue 188", when Hiro can't believe that fellow TeenGenius Karmi can't tell that [=Civilian!Hiro=] and [=Hero!Hiro=] are the same person, despite having seen both up close.

** Cass/Krei ([[ShipSink though sunk]])

* SpotlightStealingSquad:
** Hiro and Baymax, due to being the main characters.
** Fred has been accused by many fans to be this, as he had a lot of episodes dedicated to him (most of them being IdiotPlot{{s}}), and the others from the nerd squad ([=GoGo=], Honey Lemon and Wasabi) don't even have episodes developing them on the count on one hand ''together''.
** Mini-Max as well, since he is a sidekick of Fred, as stated above.
** Fans agree that the "Fugitives" arc was more bland compared to the "City of Monsters" arc, mostly due to too many episodes being stand-alone and focusing on Chief Cruz antagonizing Big Hero 6, instead of building up [[TheyWastedAPerfectlyGoodCharacter Trina's ascend as the]] BigBad in "Legacies" (which instead was barely mentioned in two episodes from the first arc and was treated as a rushed twist).

* TheyChangedItNowItSucks: Several fans were very disappointed and a bit outraged with Creator/KharyPayton replacing [[Creator/TheWayansFamily Damon Wayans Jr.]] as Wasabi and and Brooks Wheelan replacing Creator/TJMiller as Fred, especially since ''everyone else'' of the original film reprised their roles. That's one of the reasons some fans tend to ignore the TV series.
** Though averted depending on the fans, who love Creator/KharyPayton as Wasabi (since they loved his work in ''WesternAnimation/TeenTitans'') and tend to '''''prefer''''' Brooks Wheelan over Creator/TJMiller, since Miller made a lot of controversy over the last 2 years.

* RescuedFromTheScrappyHeap: Karmi. She was a character with [[BaseBreakingCharacter mixed responses]] in the first season due to her harsh behavior towards Hiro and Baymax. But as Season 2 goes on, CharacterDevelopment hits her and considering she's in the middle of the Sycorax mess unbeknownst to her, fans now worry for her safety. [[spoiler:This worry is justified when Liv gives Karmi an "upgrade" against her will in City of Monsters.]] After [[spoiler:being PutOnABus]], people who previously hated her now appreciate her CharacterDevelopment and [[spoiler:[[TheBusCameBack hopes she comes back]]]]. [[spoiler:They also appreciate her cameo in "Legacies"]].

** Hiro and Tadashi's parents are stated to have [[ParentalAbandonment died when Hiro was three years old]] in the movie. All that is known of them is a picture of their father with their pregnant mother appearing '''only''' in the Korean release of the movie. The series could've been a perfect occasion of seeing more of them as PosthumousCharacter{{s}} with flashbacks and seeing how Aunt Cass grieves her sister and brother-in-law while struggling to now raise her surviving nephew alone. They never got a single mention since the brief one from the movie.

** Trina only appeared three times before her BigBad role in "Legacies", two of them being minor appearances that barely reference her revenge scheme, which makes her being the antagonist in the finale too rushed. In the same vein, Trina shares only ''one scene'' in total with Obake before [[spoiler: his demise]] in Season 1. "Legacies" could've been a ''perfect'' occasion for a flashback that covered more ground on their father-daughter bond.
** Similar to ''WesternAnimation/LiloAndStitchTheSeries'' , the show in general has received a lot of indignation from fans who were expecting the series to be as emotional as the movie. Prime examples include more flashbacks of Tadashi, how Hiro’s parents died, how the nerd gang came together, learning their own backstories and real names and how Baymax came to be.

* UnintentionallySympathetic: Fred in ''Big Hero 7.'' While blabbing his secret identity to Richardson was a massive bone-headed move on his part, he was expected to comply with blackmail to make up for it.

** Another one with [=GoGo=], but the third issue of the comics has an ovbvious ShipTease between her and the VillainOfTheWeek Mechadama/Olivia Vega, who herself is AmbiguouslyGay.

** Unlike most other action shows that utilize a core team, the titular team appears together in every episode. One side argues that there should be episodes that don't have all of the team together in order to enhance the quality of the more character-specific episodes, while another side argues that there are still plenty of episodes that give other characters time to shine even with the team together in every episode. Season 3 attempts to fix this by having only a few members of the team make appearances in episodes, but given the controversial shift to a comedy focus, whether it works or not is up to the viewer.

** Unlike most other action shows that utilize a core team, the titular team appears together in every episode. One side argues that there should be episodes that don't have all of the team together in order to enhance the quality of the more character-specific episodes, while another side argues that there are still plenty of episodes that give other characters time to shine even with the team together in every episode.

** In "Small Hiro One", [[spoiler:Trevor Trengrove tricks Honey Lemon, Wasabi, and [=GoGo=] into [[VideoGame/{{Deltarune}} helping create a machine to thrash their own asses]].]]

* TheScrappy: Chief Cruz for being the stereotype of the law enforcer who hates superheroes, despite the fact that Big Hero 6 had saved the city countless of times. His illogical deduction that superheroes attract supervillains (which even if it was true, it was made especially clear when the news channel of the first episode of season two states that thanks to Big Hero 6 crime has actually gone down to an all time low) makes his hatred of superheroes seem to be out of nothing but spite. The hate towards him grew when he [[UngratefulBastard shrugs off Big Hero 6 saving his life and still wants them arrested]]. Not only that, but his annoying OverprotectiveDad tendencies towards Hiro for getting close to his daughter comes off as hypocritical considering that he tries to date Aunt Cass. Even after his backstory has been revealed, it made fans ''dislike him even more'' as his backstory is cliché and makes [[FreudianExcuseIsNoExcuse his hatred of superheroes selfish and mostly motivated by pride.]] While Megan Cruz is at least mentioned in Season 3, her father never makes any major appearances, quite possibly due to this tepid reaction.

* ToughActToFollow:
* " While the show is well received by many people, it's not as fondly looked upon as the creators' previous work on ''WesternAnimation/KimPossible'', with some people thinking it's trying too hard to recapture the magic of what made it work. This could also be said for the [[WesternAnimation/ThePenguinsOfMadagascar previous]] [[WesternAnimation/MonstersVsAliens2013 works]] in between the two shows, but it's really noticeable here.
** Within the show itself, some feel everything after "City Of Monsters" didn't live up to the potential the show had due to having less of a focused plot and, thanks to executive meddling, an emphasis on humor over character development.

* ToughActToFollow: While the show is well received by many people, it's not as fondly looked upon as the creators' previous work on ''WesternAnimation/KimPossible'', with some people thinking it's trying too hard to recapture the magic of what made it work. This could also be said for the [[WesternAnimation/ThePenguinsOfMadagascar previous]] [[WesternAnimation/MonstersVsAliens2013 works]] in between the two shows, but it's really noticeable here.

** Sirque is an attractive ClassyCatBurglar acrobat who [[spoiler:stole Krei Tech's Project Silent Sparrow portal technology to commit heists,]] who only appears in one episode before "Go Go the Woweroo" reveals she was arrested offscreen.

* TheScrappy: Chief Cruz for being the stereotype of the law enforcer who hates superheroes, despite the fact that Big Hero 6 had saved the city countless of times. His illogical deduction that superheroes attract supervillains (which even if it was true, it was made especially clear when the news channel of the first episode of season two states that thanks to Big Hero 6 crime has actually gone down to an all time low) makes his hatred of superheroes seem to be out of nothing but spite. The hate towards him grew when he [[UngratefulBastard shrugs off Big Hero 6 saving his life and still wants them arrested]]. Not only that, but his annoying OverprotectiveDad tendencies towards Hiro for getting close to his daughter comes off as hypocritical considering that he tries to date Aunt Cass. Even after his backstory has been revealed, it made fans ''dislike him even more'' as his backstory is cliché and makes [[FreudianExcuseIsNoExcuse his hatred of superheroes selfish and mostly motivated by pride.]] While Megan Cruz is at least mentioned in Season 3, her father never makes any major appearances, which suggests that [[CreatorsPest the writers gave up on him]].

*** Season 2 handled it ''way'' better, with Tadashi being mentioned more often and having a posthumous, but still crucial role in both the mid-season and end of season finales. He still has a posthumous {{Day In The Limelight}} in "The Present", which features Hiro in his first Christmas without Tadashi.
** Hiro and Tadashi's parents are stated to have [[ParentalAbandonment died when Hiro was three years old]] in the movie. All that is known of them is a picture of their father with their pregnant mother appearing ''only''' in the Korean release of the movie. The series could've been a perfect occasion of seeing more of them as PosthumousCharacter{{s}} with flashbacks and seeing how Aunt Cass grieves her sister and brother-in-law while struggling to now raise her surviving nephew alone. They never got a single mention since the brief one from the movie.

** Similar to ''WesternAnimation/LiloAndStitchTheSeries'' , the show in general has received a lot of indignation from fans who were expecting the series to be as emotional as the movie. Prime examples include more flashbacks of Tadashi, how Hiro’s parents died, and how Baymax came to be.