History Fridge / BigHero6

* A ''lot'' of Baymax's more humorous and erratic moments can be chalked up to him still being a prototype that is still being developed

* A ''lot'' of Baymax's more humorous and erratic moments can be chalked up to him still being a prototype that is undergoing testing.

** Insufficient adherence to legal guidelines: Tadashi is likely aware of the legality associated with the medical field, which is why Baymax explicitly identifies himself as a "Personal Healthcare Companion," and cannot shut down unless a patient verbally states that they are satisfied with their care. However, he also instantly contacts Hiro's friends when attempting to comfort him, which could be considered a clear violation of patient privacy.

** Missing data: Baymax initially lacks information on psychological treatments, as well as knowledge of idioms, expressions, and turns of phrase. Given that Baymax is supposed to operate as a personal healthcare companion, knowledge of these subjects would need to be included.

* When Hiro takes out Baymax’s nurse chip and only leaves his fighting chip in with the intention of making him kill Callaghan, the robot’s eyes turn red. There is no reason for Tadashi to have programmed his friendly nurse bot with the ability to have scary, glowing red eyes. Meaning Hiro went to the trouble of programming Baymax’s eyes to turn red in murder mode for the extra intimidation factor. This kid is scary.

** Alternatively, the standard application process likely would have worked perfectly fine for Hiro if he wanted to start school next year. If he wants to start immediately, he'll need someone with Callaghan's clout to pull some strings for him.

** Even if he's not suicidal, Hiro's urge to resume bot-fighting may have been the grieving boy's desire for ''revenge'' seeking an outlet, even if he didn't yet know there was anything but bad luck to blame for Tadashi's demise. Hiro's a little guy, so having his bot whale the tar out of other competitors' bots is the closest he could expect to come to beating people up in directionless, frustrated anger.

[[folder: Fridge Logic]]
* Baymax initially fails to see how flight "makes [him] a better healthcare companion", but begins to understand by the end. San Fransokyo is on the San Andreas Fault, and therefore ''extremely'' vulnerable to earthquakes. One of the biggest issues in natural disaster response is many places becoming inaccessible due to destruction of roads, being stuck on the side of mountains, etc. If one were to expand his remit a little, a jet equipped Baymax would have no such issues getting to those in need, and would be a massive boon to emergency response teams, while still fulfilling his primary directive to heal. His martial arts skills (and possibly being equipped with the rest of the team's gear) would also help him do that, like getting into collapsed buildings, for instance.
[[/folder]]

** Big Hero 6 originated as a Marvel comic, so it makes sense for [[spoiler: Stan Lee]] to be in this movie. In fact, one could say that this movie is set in the MCU, in a way.

* Wasabi protests about his nickname because he only got wasabi on himself once. However, chances are, considering how much of a NeatFreak he is and that he ScreamsLikeAGirl, he didn't earn the nickname through the spill itself, but rather... his (over?)reaction.

* Wasabi protests about his nickname because he only got wasabi on himself once. However, for a NeatFreak like him, that one time must have been quite a big event.

* [[spoiler: Creator/StanLee]] being Fred's father. Suddenly everything makes sense about the character -- why he'd be super into comics and superheroes and the fact that he has a giant collection of memorabilia (and probably why he's so frickin' rich).

** Big Hero 6 originated as a Marvel comic, so it would make sense for [[spoiler: Stan Lee]] to be in this movie. In fact, one could say that this movie is set in the MCU.

** Likewise, he needed Hiro to say what he did [[spoiler: because his main personality chip is that much stronger than his fighting chip. He needed to 'fight' and to do so, he needed to shutdown his caregiver chip. It also explains how/when he slipped the chip into his glove -- he was literally self-overriding his programmed directive to stay with Hiro.]]
** If you think about it this is also wonderfully symbolic. [[spoiler: The fighting chip created by Hiro was a direct response to his hatred of Yokai, because he was the cause of Tadashi's death. Once Hiro admitted that his care was complete, it allowed him to let go of the depression, anger and sorrow he had, and Baymax was ready to complete the last step of the treatment; to take the fighting chip, and all of the hatred it represented, into the void never to be seen again.]]
** There is another explanation that's also FridgeBrilliance. When Hiro removes the chip earlier, the change in personality doesn't change until the chip-bay is closed. This lines up with computer programming, the kernel generates the operating system which runs in the virtual memory, which doesn't change until the system is rebooted. As long as Baymax doesn't close the chip-bay, he won't reboot and can function without his chip.
* Of course the group fights badly when they go after Yokai with their new gear; not only did they only train for about an afternoon, most of it was only getting used to the tech, and was individually based! They didn't learn how to fight as a team before trying to fight as a team.
* "I am satisfied with my care." For the most part, it is presented and understood that some person has been properly tended to and is telling their caregiver of that fact. However, certain scenes present it with a slightly altered meaning in the context that some person is happy with how they have taken care ''of'' someone else. [[spoiler: Such as when the video of Tadashi says the line, it can be taken as a symbolic way of him saying he's happy about the way he's helped raise Hiro.]]
* "Tadashi is here." also applies in that his spirit of kindness and altruism lives on in Baymax. Bonus points for Baymax pointing to his 'heart' every time. Tadashi is Baymax's heart.
* Hiro and Tadashi's mixed heritage makes sense given the {{Americasia}} setting, a lot of people in that city would have mixed heritages.
** Though the Hamada name suggests the Japanese half is on their father's side, but Cass also bears this name and appears to be wholly white.
** She and the boys' father might be only mostly white with the name coming from a grandfather or great grandfather. The boys' mother could also be Japanese or of mixed heritage.
** Don't forget that, in Japan, it's not uncommon for the husband and the rest of the family to take on the wife's family name. Such as if her family owns a large business, or if they're of higher status than her husband's family. Or other reasons.
** Also, Cass doesn't actually have a canon surname - her surname being Hamada is pure fanon. Plus, the Korean version of the film shows that their mother is Japanese, while their father is white.

* All of Fred's nicknames are based around food in some fashion, Wasabi and Honey Lemon are obvious, and "Tomago" being a corruption of "Tamago," a Japanese-style omelette. Seems kind of random, fitting in with Fred's personality... until you realize that Fred, being the "mascot", would likely be the one asked to do food runs for the busy students.

* Tadashi staples a flier for the [=SFIT=] showcase ''over'' one of Hiro's battle bot posters. This shows that he wants his brother to get into the institute and lose interest in the destructive (and illegal) practice, which, eventually, he does.

*** SFIT is where (and indirectly, ''how'') Tadashi died, so Hiro, in his grief, wanted to remove all memories of that night, as he did by throwing away his acceptance letter.
* "Gummi Bears": Many modern robots aren't just tested for strength, but control [[http://www.sciencedaily.com/releases/2012/03/120330110533.htm as well]]. It's... ''somewhat'' easy to make a machine strong enough to smash concrete, but it's more difficult to create a machine intelligent enough to restrain itself. Armored Baymax is not only strong enough to karate-chop cinder blocks and knock down walls, but gentle enough to order gummi bears without breaking the machine -- or carry Hiro to safety without injuring him.
** Plus as a candy, they're fast energy provided by sugar, and Hiro seemed powered by every fast sugar source he could get his hands on during Baymax's armoring. Could you blame him for needing to gas up?
* Honey Lemon is TheHeart of Big Hero 6 and notice how ''she'' was the one to [[spoiler:return Baymax's chip or "heart" to him.]]

** Fred: Gives enthusiasm to anything science-related.

* When Hiro and Baymax are in the [[spoiler:half-portal realm trying to save Abigail,]] you may see a beautiful landscape in the background constantly changing. This is a Mandelbulb set, a three-dimensional analogue to the Mandelbrot set.
* [[AllThereInTheManual Fred's Secret File]] states that Honey is an excellent baker and cook. This makes a lot of sense, and not just because of the FeminineWomenCanCook trope; baking and cooking are essentially just different kinds of chemistry, which Honey specializes in. Baking especially because of the precise nature of the ingredients needed for things like breads rising and glutens binding is exactly chemistry.

** You could also read Hiro using "Destroy" both as a coping method to dance around the fact that he wanted to kill someone, or a deliberate objectification of Callaghan's own life since Callaghan went and claimed Tadashi's death was 'just a mistake'. Or it could be all three of these.
** And another way it could be taken is that "Kill" implies that's all, that he ''just'' wants him dead; "Destroy" means ''[[NotEnoughToBury he wants there to be nothing left afterwards.]]'' In that moment, Hiro doesn't just want Callaghan dead. He wants him ''[[LudicrousGibs converted into a red smear on a wall]]''.
** It's also the command Hiro uses in bot fights ("Megabot, destroy!"). He was trying to treat dealing with Callaghan as just another bot fight.
* Wasabi protests about his nickname because he only spilled the sauce once. However for a NeatFreak like him, that one time must have been quite a big event.

* When Baymax's battery is low, his behavior is similar to a drunk person's. While this is funny, in actuality, that's not how robotics (or technology in general) work. Realistically, Baymax would've slowly began shutting down the functions he could to conserve his battery, but otherwise, still work properly to the extent he was able to. In other words, Tadashi had to ''program'' Baymax to behave that way on low battery. Now, remember that it took Tadashi eighty-four tries to get Baymax to work. He tried eighty-four times to make Baymax a little fun in addition to being a healthcare robot. Most people would've probably taken that extra bit of work out, if they even made it past ten attempts!
** Alternatively, that might've been exactly what was happening: Shutting down noncritical parts of his speech, motor, cognitive, and navigation systems in order to maintain overall online status.
*** It could also be both. Tadashi could have programmed Baymax to shut down non critical systems in a sequence to mimic inebriation, both as a method of maximizing the remaining energy and putting levity into a robot with low battery to minimize the frustration factor of losing power. Baymax' "symptoms" also mimic the effects of extreme fatigue, acting as a strong audiovisual indicator of the problem's origin.
* Yokai never talks, which just adds to his creepiness. He turns out to be [[spoiler:Callaghan, and then his silence makes sense: If he had talked to the heroes, they would have recognized his voice, finding out his identity sooner.]]

* The Hamadas' cat, Mochi, is a Japanese bobtail, which are considered lucky blessings in Japanese culture; and calicoes are especially favored by the Japanese and cat fanciers. Aunt Cass's bakery is called the ''Lucky'' Cat Café and its main theme is Maneki-neko, AKA beckoning cats, which are traditionally depicted as calico Japanese bobtail cats as well.
* Wasabi's HeroicBuild makes sense when you take into account his [[ThePerfectionist desire to keep things orderly or as close to perfect]]. This doesn't just mean his science field, the law, or how he keeps his desk. ''It also extends to his own body.''
* Why was it so easy for Yokai to [[CurbStompBattle curb stomp]] the heroes in their first battle? Not just because they were new and inexperienced, but because [[spoiler:they're all his students. He's worked with them and seen samples of their work for years. He knows their flaws, how they think and operate, what weapons they would be most likely to build, and how best to react and counter them.]]
* Why isn't Aunt Cass shown in any scene, however minor, freaking out when Hiro is out after dark? Especially the last battle, when he probably doesn't return home until morning? Well, earlier when Hiro was chasing Baymax, he lied to her, saying he was registering for classes. So, she thought that the days he didn't come home at night, were him pulling all-nighters at school trying to create a new invention.
** Could be. He even specifically told her that because he registered late, he had a lot of work to catch up on.
** She also could've gone through something similar with Tadashi, especially during the nights he was building Baymax, so either of them staying late wouldn't be very concerning for her.
* Why didn't Baymax tell Hiro that he was sending the microchip with them? There is two reasons: 1) Baymax literally had half of his brain missing; 2) Baymax healthcare protocol might be afraid of being violated again, so he didn't offer the information that it was possible to the person that violated last time.

*** Which further extends to his "Tadashi is here" speech. Most people would take "Tadashi is here" to mean: here in memory or spirit. Baymax meant literally, as in, there's a video of Tadashi right on the chip. If Hiro were a little quicker absorbing that aspect of Baymax's personality, he might have looked for a chip sooner.

* Baymax's fist bump seems weird... Instead of imitating Hiro's explosive sound effect, he sounds more like he's trying to cheer up a child. However, that's just exactly what Baymax is: He's not built to fight -- he's built as a personal healthcare companion.
** It also could have been Baymax's voice synthesis program putting a bunch of letters together after misinterpreting Hiro's explosion sound effect with a word.
*** People might think it's weird that he can obviously make the sounds when he shushes Hiro while his battery is low, but you have to remember -- in his normal operations involving healthcare, he might have to shush people. He probably ''won't'' have to make explosion noises, so he has to try to replicate the sounds from scratch and his programming probably won't allow him to make a sound too similar to avoid confusing patients or staff.
* Why does Baymax say he'll always be with Hiro? Because he slipped his microchip into the rocket fist so he can be rebuilt even if his body is lost forever.
* Why was Baymax in Tadashi's room rather than back in the Lab? The biggest hurdle to autonomous robotics is having them navigate home environments and it's likely Tadashi was intending to test out and tweak the big guy back home. Indeed Baymax has a few troubles when he activates for the second time, including knocking books off a shelf and not paying attention to traffic.

* Why does Baymax only run out of power once? The only time he does is after running his inflation pump longer than usual, deflating and re-inflating to get in the warehouse and the comical tape scene. Most of his systems are energy efficient but in normal, not infiltrating secret bases situation his inflation and deflation only need to happen in his pod where he's been charged so they can afford to be less energy efficient.
** Add in that Hiro likely added in a way for Baymax himself to charge while in all of his [[PowerArmor armored modes]]. Aside from their main power sources, they probably are capable of generating energy from Baymax's motion and flight, a small amount of which he can feed off of to stay topped off, which is especially convenient since all he has to do to recharge is stand on the station, so a docking station can easily be incorporated into his boots. A huge amount could come from his thrusters in his final configuration-lots of jet and rocket engines have alternators to generate electricity once they're turned on, just like the alternator in a reciprocating engine.
*** So why would Tadashi ''not'' have created Baymax with supercapacitors? Simple: heat. A supercapacitor can receive and expend energy way faster than a battery can, but a lot of that is bled in thermal energy. A LOT of thermal energy because a supercapacitor can release the same energy as a battery in a far shorter amount of time -- not something you'd want for a healthcare robot skinned in what looks like vinyl that could be prone to melting or losing strength in the seams when very, very hot.
*** That yes, but more that Baymax was never intended to be out of his charging port for very long in the first place. No need to level up the engineering cost and complexity even more, when your invention is supposed to spend about 15 minutes at a time (on hopefully rare occasions) on battery power.

* Hiro makes all the gear based off the users' specialties/area of study. [[spoiler: Thus, it's appropriate that Callaghan used Hiro's microbots, as they were based off his own invention.]]
* Honey Lemon becomes extra impressive considering that she's the only member of the team who actively has to remember her academic side even on the field; everyone else can just charge in, but she doesn't need to use a cheat sheet when she codes in all the different formulas onto her purse. The side material even states her intelligence is the highest in the team next to Hiro.

** Forgivable in that of the people shown to be very interested in the microbots, six are the titular heros and two are presumed dead. Krei is the only other one who wanted them.
** Plus villainous schemes don't have to be cost efficient and are usually a hidden part of any comic CorruptCorporateExecutive personality.
** Yokai building more microbots in a fairly simple setup in an abandoned warehouse is also [[spoiler: a clue that he's not Krei, who could easily afford a more secure location than just some building in downtown and could likewise afford mass production.]]
*** Fred does have a good point in accusing Krei -- at this point he's the only one we know has the means (his power) the motive (he demonstrated interest) and the opportunity (he was present, along with his assistant). We have the word of a trusted friend that he's greedy and cuts corners. We even saw him trying to casually sneak off with one of the micro-bots. It is ridiculous that he'd do it all by himself, but the idea that he's behind it is solid.

* Baymax learns to mimic Hiro's body language and figures of speech which may seem extraneous to his programming. However mimicking body language is an excellent way of building rapport, which fits ''perfectly'' with his "non-threatening, huggable" exterior -- what better way to help a nervous or introverted patient than connecting with them on a personal level?

* Baymax's body is made of vinyl to be soft and huggable. When running from Yokai the first time, we also see him use his body as an airbag for Hiro. That airbag quality works out, too, for the armor Hiro makes for him. The airbag would likely act as a cushion against any blow delivered to Baymax's armor, which gives Baymax an additional layer of protection for his [[strike:titanium]] carbon fibre skeleton.
* The credits show Hiro giving Officer Gerson a new tape dispenser. This symbolizes Hiro’s growth in the film. In the beginning of the movie, Hiro breaks the law without feeling bad about it. But by the end of the movie, through the Big Hero 6 team, he’s giving the police the tools and help they need to patch the tears in society and keep it from falling apart. And this tape dispenser symbolizes that help.
* Baymax first initiates the conversation about [[spoiler:Tadashi's death]] by simply saying "Tadashi" repeatedly, without any other context. Why would he do this? Because Baymax is actually sentient enough to miss the company of someone who amounts to being both his parent and best friend. However, because he isn't supposed to have any emotions whatsoever, his programming doesn't allow for him to formulate the sentence "I miss Tadashi." as he isn't supposed to be able to miss anyone. The only way he can express himself is to blurt out Tadashi's name which is meaningless on its own; technically this behavior is a glitch.
* Why combine American and Japanese culture for the setting of this super hero movie? Because America and Japan are the two countries who make the most superhero content! They also have similar comic designs as of recent years.
* Why does Baymax keep pestering Hiro when he says nothing hurts? He heard Hiro's exclamation of pain and Tadashi likely programmed him with the knowledge that people often lie to their doctors about injuries they are uncomfortable or embarrassed about, so he is pushing to ensure that proper treatment is given.
* Over the course of the film, Hiro's quest for "revenge" pushes him to upgrade Baymax, at the same time solving numerous problems that could be seen in Baymax's first scene.
** The speed; a very slow-moving robot wouldn't be of any help to a person who is rapidly losing vital signs. Same goes for anyone suffering a terrible, sudden injury due to an accident.

** The concept of death, which was sadly learned through [[spoiler:Tadashi's death, and Hiro's mourning.]]
** Last but not least, how to be less "robotic" when he helps. Becoming Hiro's friend and learning a few socializing tricks (like the fistbump) has greatly helped. The relationship doctor-patient loses a lot of importance without this.
** Reaction, as well. When Hiro kept hurting himself by accident, all Baymax did was sit and watch while repeating his shpiel over and over. This is both incredibly bad form, and it should be foremost in his programming to be able to react to prevent any further harm to a patient before moving on to treat them. Just as you wouldn't attempt to perform CPR on a victim who is still in the water, it is inadvisable to treat someone until they are out of forseeable or imminent danger.
** Related to the above, independent thought and action. Although Baymax is programmed to be an aid, it is only logical that Baymax must also be able to think for himself as to what the best action to take to help the situation would be. In the event that he has a patient in need with no higher authority present, or if he is alone with a patient who is unresponsive and in need of help. He shows some signs of this already when he calls Hiro's friends and looks up information about depression when he determines this is his problem, but is only able to ascertain this after being spoken to by Hiro and taking it as part of his examination.

* "Immortals" by Music/FallOutBoy actually makes so much sense you're almost tempted to think it inspired this movie, rather than just being picked on a whim. "They say we are what we are/But we don't have to be" is a CallBack and contradiction to Honey's protest that they can't be superheroes because "we're just ... us." "I'm bad behavior but I do it in the best way" is a great way to describe superheroes, who often pursue justice with a certain disregard for the law. And the rest looks like it's addressed by Hiro to Tadashi. "I'm still comparing your past/To my future" and "I'll be the guard dog/Of all your fever dreams" -- after Tadashi's death is when Hiro starts acting more like him (or trying to ... Tadashi wanted to help people by building a medical robot, Hiro wants to help people by accosting a murderer, though there are flaws in Hiro's approach that will later be corrected). He is the "sand in the bottom half of the hourglass" -- Tadashi's goals flowed into his. It seems becoming ''Big Hero 6'' is an attempt at MySiblingWillLiveThroughMe.
* Callaghan persuading Hiro not to sell the microbots to Krei makes even more sense later on; [[spoiler:Callaghan prevented Krei from having them so that the former could steal them for himself. It also doubles as a subtle EvilIsPetty moment -- by accusing Krei for being CorruptCorporateExecutive with no morals and depriving him of an invention that would be beneficial to Krei Industries, Callaghan is doing those to stick it to him for what happened to his daughter]].

* I always thought that if the Baymax prototype becomes so popular that everyone has a personal health care assistant, it would eventually take the job of real doctors. Then I realised that Baymax may be professional in basic healthcare but still lacks functions that a real medic can do. For instance he can perform CPR and apply basic first aid but he can't patch up open wounds, relocate a broken limb nor perform complex surgeries. All those things will still need actual doctors.
* If Hiro wanted to get into SFIT, why didn't he just fill out and send a paper application instead of going to all the trouble of conceiving and building an entirely new invention to enter in the SFIT Showcase? A Doylist answer is that it would be too boring and not move the film's storyline along in any way. A Watsonian answer could be that SFIT is much more than just a standard top-tier university; it requires not just intelligence and high grades, but creativity and the ability to "think outside the box". As Callaghan said, "If you like things easy, then my program isn't for you. We push the boundaries of robotics here. My students go on to shape the future." A standard college application would show that Hiro is a highly intelligent child prodigy who graduated high school at 13, but wouldn't provide an opportunity to display his real strengths in problem-solving, creativity, and developing technology.
** Alternatively, the standard application process likely would have worked perfectly fine for Hiro if he wanted to start school next year. If he wants to start immediately he would need someone with Callaghan's clout to pull some strings for him.
* Why doesn't Baymax have a mouth? Aside from the fact that he doesn't require one to communicate, designing a mouth for him that opens and closes in time with his speech would not serve any purpose. He has a very practical, simple design -- an all-white body made up of basic shapes, fingers articulate enough to hold objects and eyes that are just big enough to see things with the cameras behind them. Giving him a mouth would be a distraction from Tadashi's goal of making him a healthcare robot first and a friendly-looking companion second.
* MeaningfulName: "Baymax" is sort of inherited from the old Big Hero 6 comics, but it fits. Not only fridge ("medical bay") but also superfridge (San Francisco Bay).
* Krei's actions at the exhibition actually [[spoiler:saved himself from Yokai. The fact that he tried and failed to sneak off with a microbot meant that Hiro had a microbot in his possession after the fire. Without that microbot, Hiro would never have found out about Yokai's plan before it was too late to stop him.]]
* Making Baymax able to fly actually ''does'' make him a better healthcare provider. As extensive as his medical programming is, there's a limit to what you can fit into a single machine. If he encounters a patient that needs medical attention that he can't provide himself, being able to fly would allow him to get them to a hospital more quickly and without having to worry about the sort of obstacles that would slow down a normal ambulance. If his scanners detect that he can't safely move the patient, he still has the option of securing them and then flying back with someone who can give them better care.
* Hiro's callow naivete is on display in the bot fight more than he thinks it is. No hustler would ever be ''that'' obvious with their hustle. The last thing a hustler wants is a reputation; if Hiro were older and more experienced, he'd at least try to play it off as luck instead of being so smug about it. Given that, it's a good thing his robotics experience turned out the way it did -- he wouldn't have had much of a future as a bot-fight hustler as nobody would've faced him.

* After [[spoiler: Tadashi's death]], Hiro was planning on going back to Bot Fighting. Based on what happened last time, he knows that he'll get himself into trouble again, [[spoiler: but Tadashi won't be there to save him.]] He could've been going back to Bot Fighting because [[spoiler: Tadashi's death]] ''made him lose the will to live.''
* As noted on the nightmare fuel page, the BeautifulVoid beyond the portal is stunning and awe-inspiring and jaw dropping gorgeous with scenery porn and gorn and all... But what comes with this BeautifulVoid is it being a VoidBetweenTheWorlds. It's beautiful, but that is all it is really. It's nothing, oblivion, even, and while easy to forget in the moment, the moment you think of what this place is, is when the moment becomes ''terrifying''. [[spoiler: Especially knowing Abigail [[AndIMustScream could have been stuck there forever]] and that Baymax #1 ''is'', though thankfully no longer alive.]]
** Especially if you consider how, in reality, the void is a dark place of blacks, purples, blues and other cool colors; a portion of the reason that it is so beautiful is because of the mix of warm reds, yellows, pinks, etc. with these default hues....which all show up because of the light coming from the portal. This further highlights how empty this place is; there isn't even a source of LIGHT. It's just darkness and emptiness and ''seemingly'' nonliving background.
** On the mollification side, [[spoiler:Baymax's persona and soul (as corny as that sounds) is not with his old body, just the mindless combat chip. There's nobody in there we know of who would actually be traumatized being stuck in there.]]
*** Which adds [[NightmareRetardant much-needed humor]] in the form of the mental image of a still-active Baymax with no armor punching and kicking at the void stupidly and running the batteries down even faster. Probably for the best that it went down that way, as it sounds like a great way to ruin a strong scene.
** Expanding on the point above, [[spoiler:Baymax made sure that Hiro told him that he could shut down before that body drifted off into the void. Most likely the body just immediately shut down after making sure Hiro made it through the portal okay. It's now an inactive shell, not a living thing.]]
*** [[spoiler: To add to this further, Baymax effectively asked for a MercyKill in this scene. If he had launched Hiro and Abigail through without being deactivated (and his programming means he would have), he would have been floating there, alone and active. Fully aware of his situation and the loneliness until his batteries ran out and he died.]]
*** [[spoiler: To expand on this further, as well, even inactive, his batteries would drain (something has to be active for him to activate on "Ow") meaning no matter how aware the shell is in the void, the batteries would sputter out, and leave Shell|Baymax as floating debris.]]

** [[spoiler:If he wasn't stopped from JumpingOffTheSlipperySlope, quite possibly a teenaged KnightTemplar [[Franchise/MegaMan Dr. Wily]] with designs for robots based on both the [[TheSwarm microbots]] and [[BadassPacifist Baymax.]]]]
** [[spoiler:That's assuming he got away with it. If he was caught? He could look forward to being arrested for murder. Between that and his previous charges, he could lose all chances of the future Tadashi wanted for him, where he used his intelligence to better the world. Also, given that Baymax was a recent invention, it's very likely that had he succeeded in killing Yokai, he would have been assumed to be some sort of killer robot and dismantled immediately.]]

*** [[spoiler:He wouldn't ''have gotten away'' if Honey hadn't put the chip in, he'd have been blasted off the Microbots by Baymax which most likely would have broken bones if not outright killed him from the fall.]]
* [[spoiler:So, Callaghan started the fire as cover for his theft of Hiro's microbots. Tadashi died in said fire. While it's not really addressed in the movie, you can certainly imagine that the entire time, Hiro [[ItsAllMyFault considers himself responsible for his brother's death.]]]]
* If Yokai's plan had succeeded [[spoiler:he would have condemned his daughter to an eternity in the void without even knowing it. What if her hyper sleep failed and she starved to death? Callaghan would have killed his own daughter without knowing it.]]
** Even worse with [[spoiler:all the debris he let get sucked into the portal that would eventually collide with his daughter's pod.]]
** Just think about what would have happened to [[spoiler: Alistair Krei if Callaghan had succeeded in throwing him in the portal too. Abigail went into hypersleep in her pod, and Hiro had his armor and Baymax protecting him, so they at least had something. But Krei is just in a suit, and has nothing to protect him from the debris floating around, or the obviously frigid temperatures in the void (since Abigail's breath is visible when Hiro finds her pod), which would probably cause him to freeze to death. Even if he went into hypersleep like Abigail had, he'd still be totally unprotected.]]
* Yama was [[WouldHurtAChild willing to beat up, possibly kill, a 14-year-old for hustling him.]] And remember, he's still ''alive'' and knows Hiro's name. Only time will tell when he gets out of jail/prison.
** It gets even worse in the official videogame, ''Battle of the Bay.'' Yama essentially [[spoiler:[[DisproportionateRetribution stages a San Fransokyo wide terrorist attack by stealing Hiro's technology, making an army of battlebots, and constructs a Big Yama giant robot, all to get vengeance on Hiro.]]]] Wasabi points out that he should get ''serious'' psychological counseling.
* The two times Yokai thought he had killed the heroes he simply left, [[NoOneCouldSurviveThat not bothering to check if they are alive]]. Seems like BondVillainStupidity at first, but with the revelation [[spoiler:that Yokai is actually Professor Callaghan it all starts to make sense. As much of a revenge driven monster as he is, he probably really didn't want to see his students' dead bodies.]]

** Given the gathering beforehand, Krei seemed to be presenting the grand opening of the building. The quick scene of Hiro in the building shows that the desks are devoid of papers or personal effects, so likely the staff hadn't been there yet.
** The FridgeHorror is more in the fact that he didn't seem to ''mind'' that the building was empty -- if there ''were'' people inside the campus he was more than willing to send them off to the void.

* When it's revealed that [[spoiler:Yokai is actually the Professor]], it makes you realize that [[spoiler:he has few qualms about ''killing his own students''. The very people he accepted and welcomed into the university. Either he's been driven that insane by his desire for revenge, or he never truly cared about them as much as we thought he did.]]
** On the other hand, if you consider all the ways the microbot-swarm ''could'' have attacked, it's possible that [[spoiler: Yokai was pulling his punches in some of those exchanges]]. Either that, or the villain just didn't have a twisted enough imagination to, say, have the things engulf somebody like a giant wave and force their way into the person's trachea so they'd choke to death.
* The scene where Fred says so proudly "My name is Fred and it's been thirty days since my last-". Ha-ha, Fred's a stoner -- no, wait... he's ''not'' a stoner. There's no way that Disney would even allow the ''joke'' that a junkie could be a hero. He's clearly saying he's trying to QUIT. Which is also amusing... until you actually think about how cannabis is... well, not all that dangerous, and constantly on the verge of being legalized anyway. And he's awfully proud about going thirty days. So Fred could be fighting a much ''stronger'' drug...
** Most stoners also smoke cigarettes, which are addicting. So he might just be trying to quit smoking.

*** He also has a very loose grip on reality since he's trying to hassle needs to get superpowers that aren't really possible.

** Canonically he's a volunteer at a variety of charities, so most likely he's just making a joke to break the ice. As for questioning if everyone else sees Yokai, he most likely has an overactive imagination. Not too much of a stretch that he'd be used to daydreaming superhero related images, it's just this time the supervillain is real.
* [[spoiler:Professor Robert Callaghan]] is basically [[WesternAnimation/{{Coco}} Ernesto de la Cruz]] in the scientific fields, with genuine brilliance, a [[PapaWolf lot]] [[FreudianExcuse of]] [[AntiVillain sympathetic]] [[WoobieDestroyerOfWorlds qualities]] and a [[AllForNothing truly]] [[HeelFaceDoorSlam pitiful]] [[AlasPoorVillain end]].

** This sort of already starts in the film, since his only friends are Tadashi's friends and he starts to act more like his brother.

** And then there's [[spoiler:Callaghan himself. What if his daughter will never want to speak with him again after hearing about his crimes? Worse still: he must be tormented with guilt over presumably killing one of his students. And, unlike Hiro, he has no companions to help him deal with his pain.]]
* Aunt Cass raised the boys presumably by herself -- clearly she lost her brother/sister and sister-in-law/brother-in-law eleven years ago, but what about other relatives? Grandparents? Aunt Cass might be an orphan herself. The boys are pretty much all she has, and now one of them is gone, just like her sibling. Further, she probably blames herself for not insisting on driving everyone back to the cafe instead of letting Tadashi and Hiro stay out a bit later. Also, while she hugs a lot, her "last hug" quirk only appears after the fire. Lastly, and this is really reaching but I saw a post on tumblr: the necklace she is clutching after the funeral appears to be either jade or malachite, which are both stones said to protect children/protect the wearer from accidents.
** The film barely touches upon her and her grief over Tadashi's death. [[OutlivingOnesOffspring She effectively lost a son.]] When she comes up to Hiro's room to give him breakfast she seems cheery, [[StepfordSmiler but she may well be acting that way to try to cheer him up without letting on how she's feeling.]]

* Baymax initially fails to see how flight "makes [him] a better Healthcare Companion" but begins to understand by the end. San Fransokyo is on the San Andreas Fault, and therefore ''extremely'' vulnerable to Earthquakes. One of the biggest issues in Natural Disaster Response is many places becoming inaccessible due to destruction of roads, being stuck on the side of mountains, etc. If one were to expand his remit a little, a jet equipped Baymax would have no such issues getting to those in need, and would be a massive boon to Emergency Response Teams, while still fulfilling his primary directive to heal. His martial arts skills (and possibly being equipped with the rest of the team's gear) would also help him do that; getting into collapsed buildings for instance.

** [[spoiler:If he wasn't stopped from JumpingOffTheSlipperySlope, quite possibly a teenaged KnightTemplar [[Franchise/MegaMan Dr. Wily]] with designs for robots based on both the [[TheSwarm microbots]] and [[BadassPacifist Baymax.]] YouMayPanicNow.]]

* Why isn't Aunt Cass shown in any scene, however minor, [[AdultFear freaking out]] when Hiro is out after dark? Especially the last battle, when he probably doesn't return home until morning? Well, earlier when Hiro was chasing Baymax, he lied to her, saying he was registering for classes. So, she thought that the days he didn't come home at night, were him pulling all-nighters at school trying to create a new invention.