What are some good ultimate crossover fanfiction stories?

Captain America would be a great addition. His old - fashioned values and leadership skills would contrast with Spiderman's more youthful and impulsive nature. They could be in a situation where they have to lead a group of heroes against a powerful foe. Also, Black Widow could be included. Her spy skills and combat abilities would be useful in a crossover. She could help Spiderman with some undercover work or they could fight side - side against a group of international villains.

One idea could be a crossover with 'Berserk'. The dark and gritty worlds of both could blend well. The vampires from Hellsing could interact with the Apostles from Berserk, leading to epic battles. Another could be a crossover with 'Fullmetal Alchemist'. Imagine the alchemists trying to understand the nature of the vampires in Hellsing. Maybe they'd try to find a way to use alchemy on them.

One interesting concept could be the clash of different art styles. For example, when a detailed anime - style character meets a more simplistic Western - style cartoon character. It creates a visually striking contrast. Another concept is the melding of different universes' rules. Like in a crossover between a magical cartoon world and a sci - fi one, characters have to adapt to new ways of doing things. Also, the character interactions can be really fun. Imagine a heroic character from one cartoon teaming up with a villain from another just because they share a common enemy in the crossover story.

One interesting concept could be seeing characters from different anime with distinct power systems interact. For example, a character from a shonen anime known for physical combat meeting a character from a magical girl anime. They might have to learn to work together despite their different fighting styles and values.

Wolverine from the X - Men would be a great addition. His healing factor and berserker rage, along with his claws, would contrast well with Spider - Man's abilities. They could have some intense battles together against common enemies. And Scarlet Witch. Her reality - warping powers could create all sorts of interesting situations. Spider - Man would have to figure out how to deal with the chaos her powers might cause while also teaming up with her to defeat a greater evil.

In a crossover with the DC Universe, Darkseid would be a great antagonist. His immense power and his desire for universal domination would put him at odds with Ultimate Gohan who stands for justice and protecting the innocent.

Perhaps Ultimate Gohan could cross over into the world of Star Wars. He could use his powers to assist the Jedi in their fight against the Sith. His ki blasts could be like a new form of Force power in that universe.

How about a crossover with the Hulk? Spiderman might be on a mission in a city when the Hulk goes on a rampage. Instead of fighting the Hulk directly, Spiderman has to figure out a way to calm him down or lead him away from the populated areas. Along the way, they could encounter some other villains who are trying to take advantage of the situation, and then they end up teaming up to defeat the villains.

One great sg1 crossover fanfiction could be the ones that cross it with 'Star Trek'. In such stories, characters from SG1 might find themselves in the Star Trek universe facing new challenges and meeting different alien species. It's really interesting to see how the different technologies and cultures interact.

A Krieg crossover with the Halo universe could also be fascinating. Picture Krieg troops facing off against the Covenant. The Kriegsmen's gas - masked appearance and their trench - warfare tactics would be a stark contrast to the high - tech weaponry and alien biology of the Covenant. It would be interesting to see how they'd adapt to Halo's different planetary environments and the threat of the Flood.