Wanda could use her powers to visualize the stories in the Yelena fanfiction. She could say 'I can see these stories come to life in my mind, and they are quite vivid.' Sam might start a fanfiction reading group among the Avengers. He could say 'Let's all get together and read some of these Yelena fanfics and discuss them.' Vision could try to create a database of all the Yelena fanfiction to better understand the patterns. He could say 'By organizing all these fanfictions, we can better understand the creativity and the trends around Yelena's character.'
Tony could use his technology to analyze the popularity trends in Yelena fanfiction. He might say 'I can see which scenarios are the most popular in these fanfics about Yelena.' Natasha might take some of the positive portrayals in the fanfiction as a compliment to her sister. She could say 'This shows that Yelena is making an impact.' Thor might not fully understand but he could share the fanfiction stories in Asgard as a strange but interesting Midgardian thing.
Steve might encourage the writers of Yelena fanfiction. He could see it as a form of patriotism in a way, like fans showing their love for a character. He might say 'Keep writing these great stories about Yelena.' Clint could be inspired by the creativity in the fanfiction. He might think about how he could use some of the ideas in his own adventures. He could say 'Some of these fanfic ideas could actually work in real - life situations.' Bruce would be interested in how the fanfiction affects the perception of Yelena's character in the public eye. He might study it and say 'This fanfiction is shaping how people view Yelena in many ways.'
When Yelena meets the Avengers in fanfiction, her interaction depends on the writer's take. She could be standoffish, having been trained in a different way than the Avengers. However, she may also be drawn to their sense of justice. She might start by observing them from a distance. As she gets closer, she could offer her unique skills to help with a mission. Her interactions could range from tense exchanges with the more serious Avengers like Thor, to more light - hearted banter with the likes of Star - Lord if he's part of the group. It's all about how the fanfiction writer wants to develop their relationship.
Thor could also be in the mix. His god - like powers and different cultural background compared to Yelena would create an interesting dynamic. Maybe Yelena is initially in awe of his abilities or she challenges him in some way, leading to an engaging interaction.
One possibility is that there would be a lot of mistrust at first. Yelena has her own agenda and the Avengers are a tight - knit group. Maybe she tries to infiltrate them for some reason related to her past in the Red Room. For example, if she thought the Avengers had some information about the remaining Black Widow - related operations.
In fanfiction, when the Avengers meet Yelena, there could be a lot of action. Maybe Yelena tries to prove herself to them. She might show off her combat skills and they would be impressed.
Well, they might initially be cautious of her. Since Yelena has her own set of skills and a bit of a wild card nature. Maybe she challenges them to a friendly sparring session to show off her combat abilities.
Yelena could bring a fresh perspective to the Avengers. Her skills as a Black Widow would be something they notice right away. She might start off being a bit stand - offish, but as she sees the Avengers' good intentions, she warms up. They could exchange combat techniques and strategies. And she might even teach them some of the more underhanded tactics she learned during her training.
Well, Steve Rogers might be a bit confused at first. He's from a different era and fanfiction is a very modern concept. But he'd probably be polite about it and say something like 'It's interesting to see how fans imagine different scenarios with Yelena.' Tony Stark, on the other hand, would likely be more intrigued. He might chuckle and say 'This is some creative stuff. I wonder what else they come up with about Yelena.' And Thor would probably just be like 'This is a strange Midgardian thing, but if it makes people happy, then so be it.'
They could start by trying to understand the different rules of that world. Since Batman's world is more grounded in detective work and street - level crime fighting compared to the Avengers' world of superpowers and global threats. The Avengers might use their powers to help solve some of the complex mysteries in the Batman fanfic world. For example, Vision could use his ability to see through objects to find clues that Batman might miss.
Snape would probably start off being rather aloof. He'd observe the Avengers' behavior and abilities before making any real moves to interact. He could be sarcastic towards them, especially if they make assumptions about him or his magic. But as time goes on, he might start to see their value and open up a bit more, sharing some of his magical knowledge.
Naruto would interact in a very enthusiastic way. He'd be in awe of the Avengers' powers and would want to learn from them. At the same time, he'd show off his own ninja abilities. He might bond with Hulk over their shared 'rage' - like Naruto has his nine - tailed fox anger and Hulk has his own. He'd also try to cheer up the more serious Avengers like Black Widow with his positive attitude. And he'd probably try to get them all to do some ninja training together.