History YMMV / BigHero6TheSeries

** 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 not ugly]].

* EvilIsSexy:
** Again, Obake. It helps that he [[InkSuitActor resembles his voice actor]] Creator/AndrewScott.
** The evil depiction of Tadashi from "Obake Yashiki" definitely counts.
** Liv[[spoiler:/Di]] Amara, the BigBad of Season 2's first arc, is a young and attractive EvilutionaryBiologist who's very popular among fans.
** Chris is referred to 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 not unattractive.
** Sirque is a pretty, acrobatic ClassyCatBurglar in a skin-tight suit and [[EverythingSoundsSexierInFrench a French accent]], who [[SheFu does a lot of jumping and flipping that shows off her body]].
** Cobra, who is a charming and gorgeous FemmeFatale. She's the human personification of the SnakesAreSexy trope.

* The introduction of Mayor Saito, the head of San Fransokyo in Season 3 brought up quite a few questions, specifically her whereabouts during the Fugitives arc and why she never attempted to stop Chief Cruz.

** 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 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.

*** 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 a young age, 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]].]]

** In the same finale, [[spoiler:Chief Cruz, who has been obsessed with bringing down Big Hero 6 for the entire season, changes his entire worldview 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 survived.]][[note]]It could be argued that this was because Megan's life was threatened by the Buddy Guardians, who 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 grateful to BH6 for saving her.[[/note]]
* SugarWiki/AwesomeArt: The movie's CGI translates very well to 2D, keeping the same style while adding in some nice comic book style animation. It helps that the CreativeClosingCredits of the movie already gave the series a template to work with.

** 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 the 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"]]). It probably doesn't help that she knew about Tadashi, whose death was very recent, and still bullied Hiro. 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.

*** 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 the majority of the series's 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. Even when Season 3 has segments that don't include every team member, Hiro and Baymax continue to appear in every one, never being absent to give the spotlight exclusively to the rest of the team.

** In a similar vein to the movie, the show having almost no basis in 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.

** While not to the same extent as ''WesternAnimation/TangledTheSeries'', the CerebusSyndrome is a bit controversial. Put simply, the back and forth switch between the wackiness and drama either makes for a huge case of MoodWhiplash or it helps keep the show from going to either extreme.
* CatharsisFactor: [[spoiler:Mr Cruz [[UngratefulBastard disregarded good actions Big Hero 6 in the past]] and tries to arrest them at all cost throughoutthe second half of season 2, even going as far as to stage a crime to lure them in. It's really satisfying when he realizes his actions lead to Trina capturing his daughter and [[AintTooProudToBeg begs Big Hero 6 to help him.]]]]

** Then there's Hardlight, who treats real-life similar to a video game.

** After "Cobra and Mongoose", fans started to ship the titular villain with Heathcliff, as their passive-aggressive banter was very much so similar to flirting, and makes the pair another example of DatingCatwoman.
* GrowingTheBeard: The pilot movie retreads a lot of ground (due to being an extended version of the film's epilogue), and the 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.

* MagnificentBastard: [[Characters/BigHero6Obake 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 a 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.

* {{Narm}}: Big Hero 6 has 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.]]

* NoYay: Obake's fixation on Hiro is very 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]].

** some fans 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.

* TheyChangedItNowItSucks: Several fans were very disappointed and a bit outraged with Creator/KharyPayton replacing Creator/DamonWayansJr as Wasabi 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 Khary Payton as Wasabi (since they loved his work in ''WesternAnimation/TeenTitans2003'') and tend to '''''prefer''''' Brooks Wheelan over T.J. Miller, especially after the latter was embroiled in a lot of controversy over the course of the late 2010s.

*** 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 DayInTheLimelight 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 for 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 once get a single mention throughout the entire series.
** 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 show him having just as much scorn and desire to arrest the heroes as his chief does.

* UnintentionallyUnsympathetic: Professor Granville comes off as rather inconsiderate in "The Dog Craze of Summer." She dumps her three high-maintenance dogs on Hiro at the last minute with a ridiculously huge amount of instructions and supplies for just one day of dogsitting when she would known ahead of time she had a conference. There is no reason given why she couldn't have called Hiro over to her home, which unlike the Lucky Cat, would presumably be prepped for three high maintenance dogs to roam around and presumably has a backyard. That she had time to arrange a truckload of supplies to be brought to the Lucky Cat shows she had time that could have been spent giving Hiro a proper walkthrough of how to do his job at her place. She also merely says the dogs have "quirks" rather than taking 20-30 seconds before getting in the cab to explain the specifics. Adding to that, we see Baymax read the critical Mr. Pip instruction from the ''middle of the book'', when putting it on the front page could have allowed Hiro to retrieve Fermi when he saw him across the street. Instead, this causes the trouble to be dragged out until night. Given how easily the dogs seem to have been controlled with their toys at the end, the entire plot could have been avoided if she had merely left Hiro a 1 or 2-page list and only 1 or 2 boxes of supplies. Even her talk about Hiro having an abundance of free time and agreement with Cass about Hiro needing real-world work experience can come off as this considering that she is aware Hiro is the leader of Big Hero 6, who just stopped being fugitives from the law, and is thus entitled to some free time.

** Obake's [[spoiler:[[DrivenToSuicide suicide]] in the Season 1 finale]] is quite dark. Then you remember it's a '''''kid's show'''''.

*** 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 the majority of the series's 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. Even when Season 3 has segments that don't include every team member, Hiro and Baymax continue to appear in every one, never being absent and giving the spotlight exclusively to the rest of the team.

*** 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 the majority of the series's 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.