Unbelievable

it's been 10 years... and I still believe that Tadashi Hamada is alive... Although I've learned in the past years that my "explanations" do not really hold any water when it comes to actually explaining how he could be alive.

Being Declared dead would mean there's a body that'd have to bury, and the only explanation for that would be the remains would have been charred enough that you can't extract a DNA sample to identify it with someone else's.

Had Tadashi been missing, they need 5 years, afaik, in order for him to be declared legally dead. People may declare him dead before that, but in the eyes of the law, you'd have to wait for 5 years for that to happen.

And I think we all have common sense to know that Hiro didn't wait for five years to enroll himself at the school.,

But considering how many plotholes would open up if we base a lot of things on reality, like how Callaghan was declared dead soon after the fire, and not missing, meaning there should be at least two charred remains in the aftermath of the fire that happened in school for one to be mistaken as Callaghan's body.

The question would be, whose was the body that they mistook to be Callaghan?

Hogwarts:

Yes,  I can see Tadashi in either Ravenclaw or Hufflepuff, but I’m leaning towards Hufflepuff. Tadashi is ridiculously smart but he’s still a good guy overall. The one thing Tadashi is, is that he’s loyal.

Ilvermorny:

The Fairy Godmother paused and shook her head. “He couldn’t help bring them back, no. It’s, ah, very complicated and hard to do anyways. I’m sorry.” Not to mention it took far more magical energy than any one person was likely to possess unless they were a god. There were more reasons than just political to get the Greek god. 

Evie came into the office and asked, “What happened?”

“The guards who were supposed to take Zevon to the Isle were attacked - they’re okay now. They took Zevon to some sort of base that was near the coast,” Mal explained. 

Evie nodded, “Okay, so what are we going to do?”

“Well, we’re gonna find him and then we have to go get him because he’s probably been hypnotized to work for them. Ben says we’re probably going to keep him here,” Mal finished.

“Can you create a potion to dispel hypnosis?” Tadashi asked. “Especially of the magical variant.” He continued. “We need to fix this pronto.” He finished.

Tadashi has more at stake in this than anyone would think, for one, he really doesn’t like the idea of dealing with Anarchy when he just got a job at Auradon.

It’d be far more troublesome to apprehend villains while moonlighting as a supehero, there’s only so much one can do after all.”

“Uma can be quite the drama queen when she doesn’t get her way,” Mal agreed dryly. “Her bark is worse than her bite though.”

“Also, we don’t have a genie,” Mal pointed out, ignoring the point about Uma entirely.

He did not don his superhero outfit rather he was in simple clothes but he did take with him the microbots he’s using as a superhero.

The Fairy Godmother paused and shook her head. “He couldn’t help bring them back, no. It’s, ah, very complicated and hard to do anyways. I’m sorry.” Not to mention it took far more magical energy than any one person was likely to possess unless they were a god. There were more reasons than just political to get the Greek god. 

Evie came into the office and asked, “What happened?”

“The guards who were supposed to take Zevon to the Isle were attacked - they’re okay now. They took Zevon to some sort of base that was near the coast,” Mal explained. 

Evie nodded, “Okay, so what are we going to do?”

“Well, we’re gonna find him and then we have to go get him because he’s probably been hypnotized to work for them. Ben says we’re probably going to keep him here,” Mal finished.

“Can you create a potion to dispel hypnosis?” Tadashi asked. “Especially of the magical variant.” He continued. “We need to fix this pronto.” He finished.

Tadashi has more at stake in this than anyone would think, for one, he really doesn’t like the idea of dealing with Anarchy when he just got a job at Auradon.

It’d be far more troublesome to apprehend villains while moonlighting as a supehero, there’s only so much one can do after all.”

“Uma can be quite the drama queen when she doesn’t get her way,” Mal agreed dryly. “Her bark is worse than her bite though.”

I’ve been seeing a lot of Big Hero 6 headcanons about Hiro and Tadashi, and even reading the books, and watching the show, I could see Hiro and Tadashi being a bit jealous of each other, however not to the point of being bitter, but it could’ve caused some arguments (which honestly, as brothers, it’s normal)

Tadashi: I think Tadashi would probably be jealous of Hiro’s intellect. I know Tadashi is very smart, but he worked for it more, where as Hiro is more naturally smart. Things come easier for him, and it also caused a lot of tension between Hiro and Karmi when going into college. I think Tadashi would be jealous because Hiro could be lazy, because he had more natural abilities. Tadashi couldn’t.

Hiro: Especially after watching the series, I think Hiro could have been jealous of Tadashi’s way with people. In the series, it was stated that Tadashi was popular in college, and I reckon it would’ve been the same in high school. Hiro probably couldn’t make friends easily because he was younger than everyone else. Hell, he even has friends now, but he met them through Tadashi, and they’re still older than him.

I think in skill, Tadashi is great at coding. He I mean he coded every single medical procedure into Baymax’s healthcare chip while Hiro merely just put on a karate vid and let the computer do the coding for him.

This is a man who, in his own mind, is a hero out for revenge. He wants to avenge what he believes was his daughter’s death due to Krei’s greed and recklessness. His daughter was taken away from him right before his eyes, her whole life is gone, there is no more future for Abigail, he’ll never see her again, and that kills him inside. In his mind, he’s doing what’s right, even if it wouldn’t be what she wanted and won’t bring her back. He’s bringing justice to her memory.

However, he’s a hypocrite. Callaghan is perfectly willing to put countless others in danger for his revenge. Just forget Krei and his damaged property for a moment. Hell, forget the microbot theft for a moment.

Callaghan set fire to a building filled with dozens of people, a building that ended up exploding, and it cost someone his life. He tried to murder a child, not once, but twice, because he was a witness to his microbot production. He tried to kill his former students because they also became witnesses. He tried to kill the child and his former students two more times because they were hunting him down and fighting back. He puts dozens of people in danger again when he attacks Krei’s new office building during its grand opening. And Callaghan has no hesitation or remorse for any of these actions. He doesn’t care that he put so many people’s lives in danger over and over again. He doesn’t care that he killed one of his young, bright students. He doesn’t care if he kills a child. He doesn’t care if he kills more of his young, bright students. He knows the risks, he knows what he’s doing, and yet he never cares for a single moment.

The only moment in which Callaghan shows any humanity is when it’s linked to his daughter. Deep down, he knows his actions would not make her happy and he knows it won’t bring her back to him. But if it’s not about his daughter, he doesn’t care. He doesn’t care who gets hurt or killed by his actions because they aren’t his daughter. He simply doesn’t care about anyone else. He doesn’t even care if he’s somebody else’s Krei.

And in the end, there’s quite the interesting contrast between Callaghan and Abigail and Hiro and Tadashi’s situations:

Callaghan, presumably a good man in the past, lost Abigail due to someone’s recklessness and greed, so he went on a rampage that put innocent people in danger, killed a man, and tried to kill several more people several times, including a child. He lost his daughter and went mad with revenge. He doesn’t care about anyone else, despite what Abigail would think.

Hiro and Tadashi were both good people at heart. They’re both brave and heroic. Tadashi lost his life trying to save another’s life, and Hero went on to become a superhero in his brother’s selfless memory, despite his earlier breakdown and need for revenge. Hiro cares about people, just like Tadashi did. But Hiro lost Tadashi in the first place due to someone else’s recklessness and greed.

And you know what happened?

Callaghan got his daughter back. She turned out to be alive all along. The child he tried to kill, the brother of the man he did kill, saved Abigail’s life. Regardless of what their relationship will be moving forward, if they have one, his daughter is alive and all right.

But Hiro doesn’t get Tadashi back, and he never will. The father of the woman Hiro saved killed his older brother. He’ll never have the opportunity to see, hear, or touch Tadashi again, or at least find comfort in the fact he’s alive and all right - because he’s not.

It’s cruel, poetic injustice. Callaghan is an absolute fiend, but he gets his daughter back safely. Hiro is a hero, but he’ll never get his brother back no matter what.

But Hiro doesn’t get Tadashi back, and he never will. The father of the woman Hiro saved killed his older brother. He’ll never have the opportunity to see, hear, or touch Tadashi again, or at least find comfort in the fact he’s alive and all right - because he’s not.

Which is a message Disney shouldn’t have sent at all. It gives an idea to impressionable minds that if they shout and cause chaos enough, they can get whatever they wanted back or otherwise.

Which is also unrealistic.

The reason why I want Tadashi alive so much is because of this. It’d be fine if Abigail Callaghan died for real after getting her out of the portal but no, she even has that moment where she wakes up.

People argue that Callaghan wouldn’t be with his daughter but that doesn’t matter at all. The only thing that mattered was Abigail Callaghan being alive. As a parent, nothing else matters.

1.) You are reading way too much into the situation and are severely underestimating kids’ comprehension skills. I’m not sure how you wrote that first paragraph without deleting it immediately.

2.) Because fiction is always supposed to be realistic. That’s why we show kids dragons, witches, and inter-dimensional portals in their entertainment. Sure, Jan.

3.) There is nothing wrong with poetic injustice and wanting Tadashi to be alive has nothing to do with that. Tadashi died. He’s a fictional. I love him, too, and can’t get enough fix-it fics, but grow up.

4.) So, you’re arguing that Abigail, a character just as innocent as Tadashi, should be punished with death or eternal imprisonment because her father turned out to be a psycho? Gee, and to think you started this off with whining about children’s morals and how impressionable kids are. YIKES!

5.) Callaghan only did what he did because his daughter, in his mind, was dead thanks to Krei. He had no intentions of saving his daughter because he had no idea she was alive. He was spurred by death-inspired revenge. God, you’re comprehension skills suck.

Secondly, you seem to have forgotten how egocentric kids can be, sure 11-12 y/o can bw reprimandes, but kids, especially those in their early school days are egocentric, they only understand their point of view.

Thirdly, its not about morality, its making life fair for both parties. Its not like Hiro outright killed her, its just about consequences on being in the portal for so long.

Fourthly, and how else was he going to rebuild the machine in a hypothetical “do it again” scenario? He will still set the building on fire and make the same choices just to save her daughter.