Tadashi himself, without his memories, would be confused. He'd see all these people who seem to know him well but he doesn't recognize them. He might feel a bit scared and out of place. As he starts to interact with the others more, he'd slowly form new relationships with them while they're trying to bring back the old ones. There could be some really interesting character dynamics as everyone adjusts to this new situation.
Well, one possible plot could be that Tadashi wakes up with amnesia and doesn't recognize Hiro or the rest of his friends. The story could then focus on how Hiro tries to help Tadashi regain his memories. Maybe they revisit all the places that were important to Tadashi, like the robotics lab at the university. Along the way, Tadashi might start to have flashes of his old life but struggle to piece it all together.
The story would change a great deal. For starters, Hiro might not be as reckless. Tadashi's presence would be a calming influence. Hiro would likely listen to Tadashi's advice more, so his actions would be more thought - out. For example, when it comes to dealing with Yokai, Tadashi could have come up with a more strategic plan rather than Hiro's impulsive attempts at first.
One great fanfic could be 'The Adventures of Tadashi and Hiro'. It might explore their relationship deeper, showing how Tadashi's influence on Hiro extends beyond what we see in the movie. It could include more of their daily life at the university and their joint projects.
Characters could have mixed reactions. If the fanfic is well - written and respectful of the source material, they might be quite positive. But if it's poorly written or changes their characters too much, they could be disappointed or even angry. For example, if a character is known for being brave in the movie but is made cowardly in the fanfic, that character would likely be unhappy about it. And this reaction could vary from character to character depending on their personalities and how much they value their established identities.
Hiro would be determined to save the kidnapped member. He'd immediately start analyzing the situation, using his intelligence to figure out where they might be held. Baymax would be concerned for the safety of the kidnapped character and would follow Hiro's lead. GoGo would be angry and ready to take action, using her speed to quickly track down any leads. Wasabi would be a bit more cautious but still committed to the rescue. Fred would probably be coming up with wild but potentially useful ideas on how to save their friend.
In a fanfic where Tadashi is alive, he might have his own story arc related to his inventions. Perhaps he creates a new invention that attracts the wrong kind of attention from a powerful corporation or a villain. This would put Big Hero 6 in a position to protect Tadashi and his invention, leading to new adventures and challenges for the team.
You can try fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms usually have a large collection of fan - created stories, including those related to Big Hero 6. Just search for 'Big Hero 6 Tadashi Sunfire' on the search bar, and you might find some interesting fanfics.
Sasuke might also be angry. Angry at the situation, angry at whoever or whatever caused Naruto's amnesia. His anger could fuel his determination to find a cure. He would push himself and Naruto harder in training, hoping that it would jog Naruto's memory, all while trying to hide his true feelings of worry and fear for Naruto's well - being.
Well, in fanfictions about them, one possibility is that they could have a friendly competition. Since both are brilliant in their own fields, they might challenge each other to see who can come up with the best solution to a problem. Maybe it's a problem related to improving Baymax. Tadashi would focus on the mechanical aspects, while Honey Lemon would think about how to use chemistry to enhance Baymax's functions. And of course, through this competition, their friendship would grow even stronger as they learn from each other.
A plot could be where Tadashi comes back as a hologram and helps Hiro solve a new mystery in San Fransokyo. This would be interesting as it would combine their strong bond with a new adventure.