A cool Big Hero 6 crossover fanfiction idea might involve crossing over with the DC Universe. Hiro could meet Batman and learn about his detective skills and use of gadgets. Baymax could interact with Superman, which would be an interesting contrast of a big, strong hero and a soft, caring robot. Or perhaps a crossover with the Powerpuff Girls. The girls' superpowers combined with the tech - savvy of Big Hero 6 could lead to some really fun and action - packed adventures.
It could be really exciting. Maybe the Avengers could visit San Fransokyo and be amazed by the high - tech there. Hiro could show them Baymax and they might collaborate to fight a new super - villain that threatens both their worlds.
One possible plot could be that the Big Hero 6 team is working on a new project in San Fransokyo when a strange series of crimes start to occur. These crimes seem to involve some sort of advanced technology that is out of this world. Spider - Man, who is on a school trip to San Fransokyo, senses that something is wrong. He starts to investigate on his own. Eventually, he crosses paths with the Big Hero 6. At first, there's some misunderstanding and a bit of a scuffle as they don't know each other. But when they realize they are after the same bad guys, they team up. Hiro figures out a way to integrate some of Spider - Man's web - slinging tech into Baymax's systems for a new attack mode, and together they take on the villain who is trying to use the stolen tech to create a portal to another dimension.
One possible plot could be that the Big Hero 6 team visits San Fransokyo. There, they accidentally cross paths with the Incredibles who are on a secret mission. Hiro and Baymax are intrigued by the super - powered family. The two groups end up having to team up to stop a new villain who is using a combination of high - tech gadgets (like those from Big Hero 6's world) and superpowers (like those in The Incredibles' world).
A plot might involve a villain who has stolen some of Syndrome's old tech and is using it in combination with the technology from Big Hero 6's universe. The Incredibles and Big Hero 6 team up to track down this villain. Frozone could use his ice powers to freeze some of the overheating tech created by the combined bad - guy tech. Honey Lemon's chemical - based gadgets could be used to counteract some of the effects of Syndrome's old inventions. And Jack - Jack, with his multiple powers, could provide some unexpected solutions and comedic relief during their adventure.
Naruto would probably be very excited to meet the Big Hero 6 crew. He'd be eager to learn about their technology. Hiro might be a bit intimidated by Naruto at first but would soon realize they could be great friends. GoGo would be interested in Naruto's speed and agility, and might challenge him to a race. Baymax would be very curious about Naruto's body functions, especially related to chakra. Sakura could bond with Honey Lemon over their shared interest in science, although Sakura's knowledge is more in the medical - ninja field.
In such a crossover fanfiction, the Big Hero 6 gang could end up in a situation where they have to protect a group of survivors from The Walking Dead. Hiro could reprogram Baymax to be more combat - ready against the walkers. Honey Lemon's chemical - creating abilities could be used to make substances that either repel the walkers or attract them to a certain area for easier elimination. They would also have to deal with the moral and ethical dilemmas that the characters in The Walking Dead often face, like deciding who to save and who not to, which would add more depth to their characters.
Perhaps there's a glitch in Baymax's system that causes him to project Riley's emotions as holograms. Hiro is confused at first but then realizes that these emotions are from someone else. They track the source of the connection and end up in Riley's mind. There, they find that the emotions are in chaos because of the sudden link to Baymax. The Big Hero 6 characters use their skills to help the Inside Out characters restore order. Hiro and Baymax help Joy understand how to better manage the positive emotions while the rest of the team helps the other emotions like Sadness not feel so left out or misunderstood.
A great plot could be that there is a threat that is causing chaos in both the Naruto world and the Big Hero 6 world simultaneously. The two groups meet while investigating the source of this threat. Naruto, with his determination and strong will, would inspire Hiro to be more confident in himself. They could combine their unique abilities. For example, Naruto could use his shadow clone jutsu to help Big Hero 6 in a large - scale battle, while the technology of Big Hero 6, like Fred's suit, could be used to give Naruto an edge against certain enemies in his own world.
In a 'Big Hero 6' and 'Inside Out' crossover fanfiction, perhaps Riley visits San Fransokyo. During her visit, she witnesses an accident that Big Hero 6 is responding to. The chaos and destruction make Sadness start to surface strongly in her. Baymax senses her distress and tries to help her. This leads to the team inviting Riley to their lab to cheer her up. Inside their lab, the emotions are fascinated by all the high - tech gadgets and start interacting with them, causing some comical and unexpected situations as they blend the two very different worlds of technology and emotions.