It could be really cool. Picture Naruto in the space - setting of Cowboy Bebop. Maybe Naruto is a bounty hunter, using his ninja skills to track down bounties. His shadow clones could be used in really interesting ways during space battles or when sneaking around on different planets.
I think Naruto would be the most interesting. His out - of - place ninja skills and his positive attitude would create a lot of chaos and also some really heartwarming moments in the Bebop universe.
One idea could be a crossover with Blade Runner. Picture Spike Spiegel wandering through the neon - lit, rain - soaked streets of Los Angeles in the Blade Runner universe. The contrast between the jazzy, laid - back Cowboy Bebop world and the dark, dystopian Blade Runner setting would create a really cool dynamic.
First, you need to really understand the universes you're crossing over. For Cowboy Bebop, study its characters, like their backstories, personalities, and goals. Then, think about how the other universe's elements can blend in. For example, if it's a Star Wars crossover, consider how the Bebop crew would react to the Force. Just start with a simple idea, like a character from one universe stumbling into the other, and build from there.