Spider - Man would probably be defensive at first. He's used to working alone most of the time, and being interrogated by the Avengers would seem unfair to him. He might crack some jokes to ease the tension, but also firmly state that he's a hero too.
He could also be cooperative. If he respects the Avengers and realizes that they're just trying to protect the city or the world, he would answer their questions truthfully. He might even see it as an opportunity to learn from them. He could tell them about his neighborhood - level heroics and how he's been trying to make a difference on a smaller scale.
Spider - Man might get frustrated during the interrogation. He has his own way of doing things and the Avengers' methods might seem too rigid or overbearing to him. But in the end, he would likely try to find a common ground with them. He could offer to work together with the Avengers on future missions, showing that he's a team player despite the rough start.
Spider - Man would probably be shocked at first. He looks up to the Avengers and being kidnapped by them would be the last thing he expects. He'd likely try to talk his way out, using his quick wit and charm. He might start by asking why they're doing this and try to convince them that they've made a mistake.
Spider - Man would be very confused. He would feel betrayed because he thought the Avengers were heroes he could trust. He could start by asking them why they are doing this. If they don't give him a satisfactory answer, he might try to escape in a sneaky way, using his spider - like abilities to find a weakness in their capture setup while still trying to reason with them.
Spider - Man would likely be confused at first. He respects the Avengers and can't understand why they are suddenly after him. He might try to talk to them, to explain that he's innocent. For example, he could swing up to Captain America and start pleading his case.
Well, in a fanfiction where the Avengers interrogate Spider - Man, it could be due to a misunderstanding. Maybe they think he's involved with some villains without realizing he was actually trying to stop them. For example, if Spider - Man was seen in the company of a known bad guy, but he was undercover to gather intel.
The Avengers would be very concerned. Captain America would immediately take charge of the situation, trying to keep everyone calm while they assess Spider - Man's injuries. Iron Man would start scanning for the best way to treat him, using his high - tech equipment. Thor might offer some of his Asgardian knowledge of healing, if there was any. Black Widow and Hawkeye would be on guard, making sure there were no further threats while the team focused on Spider - Man.
Some fans would be very shocked. They are used to seeing Spider - Man as a friendly neighborhood hero and an ally of the Avengers. If he were to hurt them, it would be like a betrayal of the image they have of him. They might feel angry at the character for a while until the story unfolds more and explains his actions.
They would probably have a range of reactions. Some might be entertained, while others would be more critical. Stark might joke about the science in it not being as good as his own tech.
Their dynamics would change a great deal. There would be a lot more tension. Some members might blame themselves or others. For example, Iron Man could be at odds with Captain America if they had different ideas on how to handle the situation. Their usual teamwork might break down as they are all dealing with grief in different ways.
He would probably try to avoid them at first. Spider - Man is used to being on his own and fighting his own battles. He might use his agility and web - slinging skills to escape from the Avengers.
Spider - Man would probably be very confused at first. He looks up to the Avengers and would wonder why they are after him. He might try to talk to them and explain that there has been a mistake.