One common theme is power exploration. Writers often explore how the stands from Golden Wind interact with powers from other universes. Another theme is friendship. They show how characters from different backgrounds form new bonds.
There's 'Golden Wind Meets the Old Gang'. In this fanfiction, the characters from Golden Wind interact with the previous generation of JoJo characters. It's full of action and nostalgic references. For example, the way they use their stands in different situations is really exciting to read about.
Another characteristic is creative plotlines. In a Jojo x 'Fullmetal Alchemist' crossover, the story could revolve around the search for the Philosopher's Stone in the context of Jojo's world, with the Homunculi having an interest in stands. This kind of unique plot keeps readers engaged as it combines the best elements of both franchises in unexpected ways. Also, good fanfiction in this genre usually has great dialogue that reflects the distinct voices of each character from the different universes.
Definitely Jotaro Kujo. His cool and stoic personality, along with his powerful Star Platinum stand, makes him a favorite for crossovers. He can easily be inserted into different universes and hold his own against various opponents.
In some 'jojo crossover fanfiction', there could be a crossover with a historical setting. Like having Jonathan Joestar in ancient Rome. His gentlemanly ways and hamon powers would be quite out of place yet fascinating in that context. He could interact with Roman gladiators and senators, changing the course of history in this fictional scenario.
Golden Frieza in crossover fanfiction often brings a new level of power and intrigue. His golden form is a significant power - up in the original series, and in fanfiction, it can be used to create interesting scenarios. For example, he could be paired with characters from other universes, leading to epic battles or unexpected alliances.
One great 'Jojo Crossover Fanfiction' is 'Jojo's Bizarre Adventure x Persona'. It combines the unique stand abilities from Jojo with the Persona summoning mechanics. The story often has the Jojo characters interacting with the Persona characters in a very interesting way, like Josuke Higashikata teaming up with a Persona user to fight a common enemy that has elements of both universes.
How about a story where the Avengers are pitted against Dio? The Avengers would have to deal with Dio's time - stopping ability with their own powers. Iron Man could try to create a device to counteract Dio's time stop, while Captain America uses his strategic skills to lead the fight against Dio's minions.
One idea could be a crossover between 'Jojo' and 'Harry Potter'. Imagine Jotaro in Hogwarts, using Star Platinum to perform magic in a unique way. Another could be a 'Jojo' and 'My Hero Academia' crossover, where the stands of 'Jojo' characters interact with the quirks of 'My Hero Academia' characters. Or perhaps a 'Jojo' and 'Lord of the Rings' crossover, with Jojo characters on a quest in Middle - earth.