I think it would be Loki. In this crossover, Loki could use his trickery to manipulate the Twilight vampires. He might see them as a new tool to achieve his goals. He could pretend to be on their side and then turn on them when it suits him. His magic and cunning would add a whole new level of chaos to the story.
Edward Cullen would be really interesting. He has his own set of powers and a complex personality. When paired with the Avengers, his ability to read minds could give the Avengers an edge in battles. But at the same time, his brooding nature and his love for Bella could also create some internal conflicts within the group. He might be hesitant to fully trust the Avengers, especially when it comes to protecting Bella.
Thor could be the most interesting. In the crossover, Thor's godly powers would be a contrast to the more earth - bound powers of the Twilight vampires. He might not understand their weaknesses at first, like the effect of sunlight on them. His attempts to fight them in his own brash way could lead to some comical and also intense situations. And his sense of honor would make him an interesting character to interact with the Twilight vampires who have their own set of values.
I think Thor and Carlisle would be really interesting. Thor is a god with all his power and Carlisle is an old - school vampire with a strong moral code. They could have some deep conversations about life, death, and power. And then there's Jacob and Bruce Banner. Jacob's hot - headedness and Bruce's struggle with his inner Hulk could lead to some intense situations. Maybe Jacob could help Bruce control the Hulk in some way, or they could get into a big fight that the others have to break up.
I think the Flash would be. His super speed is so unique and it would be fascinating to see how he interacts with the Avengers.
I think Hulk would be the most interesting. He's all about brute strength and smashing things. Facing Godzilla, he'd be like a tiny but very angry force against a huge monster. It would be a battle of the titans in a sense, and seeing how Hulk reacts to Godzilla's size and power would be really exciting.
I think Loki would be really interesting. He's always the trickster in the Avengers world. In a crossover with Glee, he could use his magic to create some wild and wacky musical illusions. He might even try to take over the Glee club and turn it into his own little kingdom of chaos.
Batman would be the most interesting. He doesn't have superpowers like the Avengers, but he's still a formidable hero. His presence in their world would be like a wild card. He'd be constantly analyzing the Avengers and their enemies, and his dark, brooding nature would contrast with the more flashy and super - powered Avengers.
Definitely the Flash and Iron Man. Tony Stark's high - tech gadgets and intelligence combined with the Flash's super - speed would make for some really cool scenes. They could work together on building some sort of super - fast vehicle or weapon. Another interesting pairing would be the Flash and Captain America. Steve Rogers' leadership and combat skills along with the Flash's speed could be a great combination for taking on enemies. The Flash could quickly get Steve into strategic positions during battles.
Ikaris and Thor would be really interesting. Ikaris has his flight and laser - like eye powers, while Thor has his godly strength and control over lightning. They could have a friendly competition over who can reach a far - off location faster or who can defeat more enemies in a short time. Their different personalities, with Ikaris being more stoic and Thor being more boisterous, would create great banter.
Green Arrow and Hawkeye would have an interesting dynamic. They both use bows and arrows, but their styles and personalities are different. Hawkeye might be more laid - back in some ways, while Green Arrow is often more brooding. Their exchanges about archery techniques and their roles as heroes in their respective teams could be really engaging. Also, Laurel Lance and Black Widow could have some intense interactions. Laurel has her own struggles with justice and revenge, and Black Widow could offer her different perspectives on handling those emotions in the world of heroism.
I think Ben's Heatblast and Thor would be an interesting combination. Heatblast can generate intense heat and fire, while Thor has his lightning powers. They could create some really powerful elemental attacks together.