How would the characters in SG1 react to Harry Potter joining them in fanfiction?

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.

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.

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.

Natsu would probably be really excited at first. He loves dragons and having a dragon king around would be like a dream come true for him. He'd probably want to immediately challenge Tiamat to a fight to test his strength. Erza, on the other hand, would be more cautious. She'd be on guard, making sure that Tiamat doesn't pose a threat to the guild. Gray might be a bit indifferent at first, but as he sees how Tiamat could be useful in battles, he'd start to warm up to the idea.

Some members might be skeptical at first. For instance, Kakuzu would be worried about how her presence could affect their money - making operations. But others like Itachi might see her as an opportunity to change the Akatsuki from within. He might try to guide her and use her positive energy to sway the group towards a more noble path.

The Weasley family would have different responses. Mrs. Weasley would be motherly and concerned about this strange new person. Fred and George would see her as a source of new ideas for their pranks and inventions. Ginny would look up to her as a strong female figure, much like she does with Hermione. And all of them together would gradually get used to having Powergirl around, and they would all grow from the experience of interacting with someone from a completely different world.

Batman would probably be very cautious at first. He'd want to study Harry and his magic to see if it could be a threat or an asset. The Joker might see Harry as a new plaything, a strange and magical being to toy with. Commissioner Gordon would likely be intrigued and hope that Harry could help clean up Gotham's streets.

Some characters might be quite amused. For example, Hermione would probably analyze the fanfiction from a logical perspective, critiquing the plotlines that involve ships. Ron, on the other hand, might be a bit bewildered at first but then find it rather entertaining. Harry himself could be either indifferent or intrigued, depending on how the ships are portrayed. If it's a ship that he has a personal connection to, like his parents, he might be more interested in seeing how the author has envisioned their relationship in the fanfiction world.

Dumbledore would likely be very accepting of Stitch. He has a great understanding of all kinds of creatures and beings. He would see Stitch's potential for good and might even try to find a place for him at Hogwarts. Snape, however, would be more skeptical. He would keep a close eye on Stitch, worried that he might disrupt the order of the school or cause harm to the students. The Weasley twins would probably find Stitch hilarious and would want to play pranks with him or use his unique abilities for their own mischievous plans.