He probably resists. Naruto has always been a fighter. He would not just sit there and let them experiment on him without a fight. He might use his basic ninja skills like substitution jutsu to try and escape the experimenters.
He would probably be very angry. Naruto has always been a free - spirited person, and being experimented on against his will would be a huge violation of his rights. He might initially try to resist physically, but as the situation gets more complex, he could start to plot his escape and revenge.
At first, Naruto would probably be excited. He's always eager to get stronger, so he might see this as an opportunity. He'd trust Tsunade because she's the Hokage and a respected medical ninja. But if the experiments got too painful or started to seem strange, he'd start to question things. He might try to talk to Tsunade about it, but in his Naruto - like way, still be respectful.
Naruto could develop a new sense of determination. He might be determined to not let Orochimaru's experiments define him. Instead, he could use what has happened as a motivation to become stronger in his own way. He may also start to study more about the type of experiments Orochimaru was doing, not to replicate them, but to find ways to counter any future threats related to that kind of science.
In this kind of fanfiction, Naruto might be subjected to various extreme experiments. For example, he could be experimented on with strange chakra - related substances to enhance or mutate his existing powers. Maybe they try to infuse him with some apocalyptic - like energy to see how his body and ninja abilities adapt.
Sakura might be extremely angry and feel guilty for not being able to protect Naruto. She could immediately start planning ways to rescue him and make Danzo pay for what he's done.
He survives through his strong will. Naruto has an unwavering determination that refuses to be broken by Orochimaru's experiments. His inner strength and the chakra of the Nine - Tails within him might also play a role in withstanding the physical and mental torture of the experiments.
Well, 'naruto experimented on fanfiction' might suggest that within the realm of fan - created stories about Naruto, there are plots where Naruto is the subject of some kind of experimentation. This could be physical experimentation, perhaps related to his ninja abilities, or it could be more of a social or psychological experiment where his character is put in unusual circumstances to see how he'd react. For example, a fanfiction might have Naruto being experimented on by an enemy to try and extract the secret of his chakra power, or he could be part of an experiment within his own village to improve his combat skills in a new and untested way.
Naruto could also use his chakra to resist. Since he has the Nine - Tails' chakra at his disposal, he might be able to disrupt the experiments. For example, he could flare up his chakra in a way that makes it difficult for Madara to continue with the procedures. Additionally, Naruto has learned various ninja techniques over the years, and he could potentially use them to counteract the effects of the experiments, like using shadow clones to create distractions or using rasengan - like attacks to break free from any devices used in the experiments.
She could be defiant. Since Harry has always been a fighter in the original series, Fem Harry might resist the experiments every step of the way. She could try to escape the moment she realizes what's going on, using her wits and any available magic. For example, she might use a disillusionment charm to slip away from her captors.
Not really. While there are all kinds of themes in Naruto fanfiction, this isn't one that pops up all the time. Most fanfictions tend to focus on things like Naruto's relationships, his growth as a ninja, or his adventures. Experimentation on Naruto isn't as widespread a theme, but it does exist in some more creative and out - of - the - box fanfictions.