Well, at first, they might be shocked. I mean, magic is not something they are used to. But then, they'd start to realize the potential. Tony would be all over Harry, asking a million questions about how his magic works. Steve would be more focused on how Harry's values align with the Avengers'. Thor would probably see Harry as a kindred spirit in a way, since they both have powers that are not based on typical human abilities. And the others would gradually warm up to him as he proves himself useful in battles and in the day - to - day operations of the team.
The Avengers' reactions would be diverse. Natasha Romanoff would likely assess Harry's skills and how he could fit into the team. Bruce Banner might be intrigued by the scientific aspect of magic. Clint Barton would be observing to see how Harry operates in combat. Overall, they'd be a bit skeptical at first but as they see what Harry can do, they'd welcome him. For example, when Harry first uses magic to save one of them from a dangerous situation, their doubts would start to fade.
Many of the Hellsing characters would be initially skeptical of Harry. They are used to their own way of dealing with the supernatural, which mainly involves guns and brute force against vampires. Harry's magic, which is so different from what they know, would seem strange and perhaps even a bit untrustworthy. However, as they see Harry in action against common enemies, some might start to respect his abilities and come to accept him as part of the team. For example, some of the regular soldiers in Hellsing might be in awe of Harry's ability to conjure things out of thin air or use spells to defeat enemies that would otherwise be very difficult to handle with their usual weapons.
Goku would probably interact very enthusiastically. He'd be eager to train with the strong members like Captain America and Black Widow. He might be a bit puzzled by some of their technology, but would quickly adapt.
Well, initially, the Avengers would be quite surprised. They are used to dealing with technology, super - strength, and other more 'normal' superpowers. But once they saw what Harry could do, like conjuring things out of thin air or using defensive spells, they would start to see the potential. Hawkeye might be a bit skeptical at first, but as Harry proves himself in battles, he would gain Hawkeye's respect. Black Widow would be quick to figure out how to incorporate Harry into their strategies, and the rest of the Avengers would follow suit.
Some Avengers might be excited. Captain America, for example, would probably welcome Nightwing for his sense of justice and fighting skills. Thor might be intrigued by this new addition from another world (in a sense, as Gotham is different from Asgard). However, Hulk might not care much as long as Nightwing doesn't get in his way during a fight. Overall, there would be a mix of curiosity and acceptance.
Well, initially, most of the Avengers would be a bit shocked. Here's this new, powerful being - a Sayian - wanting to join their team. Hawkeye would probably be a bit skeptical as he's used to relying on his own skills more than superpowers. But as time goes on, if Sayian proves their loyalty and helps in battles, the Avengers would gradually accept them. Vision, with his understanding of different beings, might be one of the first to try and bond with Sayian, seeing the potential in their combined powers for the greater good of the universe.
Some Avengers might be skeptical at first. Captain America, for example, would probably want to make sure she's trustworthy. Thor might be more open - minded, seeing her as a potential ally with great strength. Hulk might not care much as long as she doesn't bother him.
Some Avengers might be initially skeptical. Thor, for example, might not understand the power of a 'spider - boy' at first. But others like Captain America would probably see his potential and welcome him. Black Widow might be intrigued by his skills and try to train him further in espionage - related aspects.
Well, initially, many of the Avengers would be cautious. They're used to dealing with super - powered individuals. But as they got to know the Dark Knight, they'd start to see his value. Hawkeye might admire his precision and accuracy. The Scarlet Witch could be interested in his mental fortitude. And Vision might study his human - like determination in the face of great danger. Over time, they'd come to accept him as part of the team, although there would still be some cultural and ideological differences to work through.
Tony would likely laugh at some of the more out - there plot ideas. He'd probably think he could come up with better technology than what's in the fanfic. Steve would be more open - minded and might enjoy the creativity. Thor would be like 'This is not like any Midgardian story I've heard!'.
Some Avengers might be amused. For instance, Tony Stark would likely find it a fun distraction from his usual high - tech world and might even make sarcastic comments about the plot or characters. He could say something like 'These wizards should really upgrade their transportation - brooms? Seriously?'.