Well, when the Avengers first encounter Sephiroth, they'd be quite surprised. Tony Stark would crack a joke to ease the tension a bit but still be very aware of the danger. Steve Rogers would stand tall and be the first to step forward, showing no fear. Thor would grip his hammer tightly, ready to defend. Bruce Banner would be worried that if Hulk gets involved, it could be a very chaotic battle. The female Avengers like Black Widow and Scarlet Witch would be sizing up Sephiroth, trying to find any chinks in his armor. They'd all be on high alert and start formulating a plan to either defeat or contain this unexpected and very powerful new arrival.
Naruto would probably be very curious about Sephiroth. He'd likely try to be friendly at first, asking a lot of questions. Sephiroth, on the other hand, would be more aloof and might see Naruto as a nuisance or a potential threat. But as time goes on, Naruto's determination might start to intrigue Sephiroth.
They would probably be very surprised. Some might laugh at the creative ideas in the fanfiction.
Inuyasha would probably be very wary of Sephiroth at first. Inuyasha is used to dealing with demons and his own set of problems in his world. Sephiroth's otherworldly power and cold demeanor would make Inuyasha see him as a potential threat. He might even attack first out of instinct.
Some would be intrigued. Captain America, being an open - minded person, might be interested in seeing different interpretations of their team dynamics. He could even gain new insights about his relationships with his fellow Avengers through the fanfiction.
Thor would likely be the most affected. He has a history with Fenrir as it is from Asgardian mythology. He might be cautious at first, but also feel a sense of kinship. Iron Man would probably be all about analyzing Fenrir, trying to figure out its weaknesses and strengths. Captain America would be on guard, ready to defend his team, but also open to the idea of Fenrir not being an enemy if proven so.
One possible plot could be that Sephiroth, with his superhuman abilities and thirst for power, somehow ends up in the Marvel universe. The Avengers initially mistake him for a new, extremely dangerous threat. They try to fight him but quickly realize his power level is off the charts. Then, they might try to find a way to send him back to his own world while Sephiroth, intrigued by the power sources in the Marvel universe like the Infinity Stones, tries to get his hands on them.
Well, Thor might be a bit shocked at first. He'd probably be amused by some of the wilder interpretations of his brother in the fanfiction. Captain America, on the other hand, would likely be confused by the whole concept as it's so different from the traditional stories he's used to. Iron Man would probably make sarcastic comments about how creative the fans are in coming up with these stories.
Some of the Avengers might be really curious. Thor, for example, might be interested in Percy's relation to the sea, as he has his own connection to water with his powers. Iron Man might be a bit skeptical at first, thinking they're just some kids with strange powers. But once he sees what they can do, he'd be impressed.
The Avengers would be shocked at first. Tony Stark would probably crack a joke about 'giant naked monsters' while quickly analyzing the threat level. Captain America would be all business, immediately assessing the situation and trying to figure out how to protect civilians. Thor would likely see the Titans as a worthy foe and be eager to engage in battle, swinging his hammer with enthusiasm. Hulk might just charge at the nearest Titan without much thought, seeing them as something to smash.
Well, initially the Avengers would be cautious. They've faced many strange and powerful foes before. When they first encounter Symbrock, there would be a sense of unease. Tony Stark would start making sarcastic remarks while analyzing Symbrock's capabilities. Steve Rogers would be the voice of reason, trying to keep the team focused on finding out if Symbrock is a threat or not. Wanda Maximoff could use her powers to try and sense the emotions or motives of Symbrock. And the Avengers as a whole would be ready to spring into action depending on how Symbrock behaves.