FAQ

Big Hero 6 is based on the Marvel comic book series with the same name, though there are many differences between the comic books and the movie, such as the characters' appearances.

Big Hero 6 is a Marvel movie but not part of the Marvel Cinematic Universe. As an animated film, it focuses on a younger audience and exists in a standalone universe.

It is heavily rumored that a sequel will be made. This movie itself, however, is not a sequel. The "6" in the title refers to the number of heroes on the team.

First, Hiro believed that all his Microbots and his "neurotransmitter" got completely destroyed in the fire at the San Fransokyo Tech exhibition. He didn't find out that his "own" neurotransmitter was still working and newer Microbots were in construction until his one returned Microbot started to move strangely (or automatically, from his point of view). Second, creating another neurotransmitter would not help. The Microbots were programmed to react only to the first neurotransmitter that Hiro created, now worn by Yokai. For the neurotransmitter to be an "approved" invention for the exhibition, it had to allow only the wearer to control the Microbots since it was meant for "good things." While it was not mentioned, Yokai might also have made a few modifications to the neurotransmitter to ensure exclusive control in the event of another neurotransmitter turning up.

While no clear specification was ever told for what Baymax can and cannot do, even if Hiro would have wanted to program Baymax to control his Microbots it would still not work properly and be pretty useless. Remember no other functional machines could access and control the Microbots except for the original transmitter.

Krei is a very ignorant person, even though he might have gotten orders from the general in the film to stay away from that island and remove some important files (after the failed teleportation test) he presumably decided to keep those files untouched in order to study what was the flaws and mistakes from his experiment. Therefore he would have wanted to create another teleportation door in the future. He might have also made a deal to keep his facility opened despite the failed experiment.

Fred explains that they got a helicopter lift from his butler Heathcliff. Fred might have made a phone call.

Yes, indeed. Stan Lee is seen as Fred's father in a portrait as Fred leads his friends through his house, and he also makes an in-person appearance in the very last minute of the "after the credits" scene. Fred finds a secret room in his house with items that suggest that his father is (or was) also a superhero. His father suddenly appears, they hug after having missed each other and gladly tells his son that they "have a lot to talk about", which might indicate that his father knows that Fred did his heroic moment. While the name (and perhaps code name) of Fred's father is unknown for the moment, his design is based on Stan Lee himself. A fun fact about this scene is that the reason why it was added is because the filmmakers got inspired by the Marvel movie Guardians of the Galaxy having their own after-the-credits scene. Thus adding this scene and it was also the very last scene to be animated just a few weeks before its theatrical release.

Yes, more villains were planned but did not make the final cut. One group, the Fujitas, consisted of martial artist roller women in traditional Japanese wear and makeup using medieval weapons. Mob boss Yama would lead a gang that included; rocket-powered bomber men and a sumo wrestler. These villains had great importance in the early drafts of Big Hero 6. A brief deleted scene showed that Yama, one of the Fujitas and Yokai would work together. One of the directors (Don Hall) revealed that as much as they liked the scene a lot, it didn't make it to the final draft due to the script being changed. Ultimately, Yama was reworked into a champion of illegal bot fight tournaments in San Fransokyo. The ringleader at the tournament early in the movie follows the design of the Fujitas.

The directors Chris Williams and Don Hall had stated respectively:

"We'll see. We just finished this one, and the truth is, we're exhausted from the ordeal of making it. It was really fun, but it was long hours, and it was pretty intense. It's a pretty emotional time for us. These are characters that we've grown to know very well; now it's time to let go of them, and they're going into the world without us. We're in the middle of that phase. So we haven't talked about or thought about any sequels or anything like that. Having said that, of course, we love these characters, and the thought of working with them again some day definitely has its appeal.

John Lasseter is very supportive of the directors, and he won't force them to put out a sequel unless they have a story that they're really excited about. It has to feel like a story that really has to be told or deserves to be told. It can't just be cashing in on the success of a previous film."

In short, they have some interest in directing a sequel, but no story is being written so far. However, Disney stated that there would be Sáu Đại Anh Hùng (2017) taking place after the movie.

Only when the situation demands.

While no specific reason to that is explained in the movie itself, it is however explained from the film crew that several characters such as Silver Samurai, Sunfire, etc. despite being part of the team in the original comic book couldn't appear in the movie due to copyright/licensing issues.