Well, she might show off her super strength and flight abilities to the Avengers. They could be both impressed and a bit wary at first. Maybe she'd team up with Thor and they'd have a friendly competition about who can fly faster or hit harder. Then she could also share her knowledge of different threats from her own universe with the Avengers, and together they could come up with new strategies to face common enemies.
Supergirl would probably start by introducing herself and her powers. The Avengers would likely be in awe of her abilities. They might ask her to join them on a mission right away. Supergirl could say yes and then start showing off her skills during the mission.
A really interesting plot could be a time - traveling crossover. Supergirl goes back in time to the era of the original Avengers. She helps them in a battle that changes the course of history. In return, the Avengers help her find a way back to her own universe. During this time, she forms a special bond with Thor, as they both have superhuman strength and a connection to otherworldly powers.
Some of them would be in awe. For instance, Hawkeye would be amazed by Supergirl's powers. He might even joke about how his arrows seem useless compared to her abilities. Hulk might initially be aggressive, but if Supergirl showed she wasn't a threat, he could become curious. Iron Man would probably want to study her powers, maybe even try to incorporate some of her technology into his suit if possible.
Well, they might first be a bit suspicious of each other. The Avengers are used to their own world of threats and heroes, and Supergirl comes from a different universe in the DC world. Maybe Iron Man would be the first to start analyzing Supergirl's powers. He'd be really intrigued by her flight and super strength. Captain America, on the other hand, would probably be more focused on whether she could be trusted. And Supergirl would be equally curious about these new heroes. She might find Thor's hammer really interesting and wonder if she could lift it.
Perhaps in this fanfiction, Supergirl and Naruto meet during a crisis that involves both their universes. Supergirl's super strength and flight could complement Naruto's speed and stealth. They could start off as rivals, each thinking their way of doing things is better. But as they face challenges together, they would come to respect each other. Naruto could use his shadow clone jutsu to create diversions while Supergirl uses her heat vision to take out enemies. Eventually, they become friends and vow to protect both their worlds.
In a 'Supergirl meets the Flash fanfiction', they might team up to fight a powerful common enemy. For example, a super - villain who can manipulate time and space, and only their combined powers can stop him.
In this fanfiction scenario, Matt Murdock could bring a whole new dynamic to the Avengers. His skills as Daredevil, like his enhanced senses and combat abilities, would be quite an asset. Maybe he'd initially clash with some of the more brash members due to his more reserved nature. For example, he might have a bit of a tense encounter with Tony Stark at first, but over time they could learn to respect each other's strengths.
A 'Avengers Supergirl Crossover Fanfiction' might involve Supergirl's Kryptonian powers being a mystery to the Avengers at first. She could show off her super strength, heat vision, and flight, and the Avengers would be in awe. Then they'd start to strategize together. For example, Captain America would lead the group with his military tactics, while Supergirl uses her powers to do the heavy - hitting. And Hulk and Supergirl could have a fun interaction comparing their strength.
Well, it could be really chaotic. Draco's slytherin ways might clash with the Avengers' hero complex. He might try to manipulate the situation for his own gain, but the Avengers would likely see through his tricks.