One idea could be that Johnny Bravo accidentally travels to the world of Samurai Jack. He tries to use his charm on the various strange creatures there, but it doesn't work as expected. Meanwhile, Samurai Jack is initially confused by this strange, over - confident man but then realizes they can work together to fight Aku.
There are some interesting ones. You can start by looking on fanfiction websites like Archive of Our Own. Some stories might explore their unlikely friendship, with Johnny's over - the - top bravado and Samurai Jack's stoic nature creating some humorous and action - packed scenarios.
The characters are usually depicted with their classic traits. Johnny Bravo is still his confident and flamboyant self, while Samurai Jack retains his heroic and determined nature.
In the comic, Samurai Jack is depicted as a noble warrior on a quest. Johnny Bravo, on the other hand, is all about his charm and self-assuredness. Their interactions can be quite interesting.
One interesting crossover could be them teaming up to fight a common enemy. Maybe a powerful alien or a super - villain. Their different fighting styles would make for an exciting combination.
Jack is a man of few words, always thinking about his next move to defeat Aku. Johnny, on the other hand, is constantly talking and trying to be the center of attention. In fanfiction, this could lead to some tense moments where Jack is trying to be stealthy and Johnny keeps blabbing. However, in a fight, Johnny's bravado might actually be an asset. His fearless attitude could inspire Jack to take more risks, and Jack's skills could keep Johnny from getting into too much trouble.
A plot could involve a magical item that both Johnny and Jack are after. Johnny wants it for his own glory, thinking it will make him even more of a ladies' man, while Jack needs it to finally defeat Aku. They start off as rivals but then realize they need to work together. Along the way, Johnny learns some lessons about honor and selflessness from Jack, and Jack learns to loosen up a bit from Johnny's carefree attitude. This creates a story full of action, comedy, and character development.
They could start off as rivals. Johnny Bravo thinks he's the coolest and toughest, and when he meets Samurai Jack, he challenges him. Jack, being the stoic warrior, initially ignores him but then realizes Johnny might have some useful, albeit strange, skills. So they start to work together.
A Johnny Bravo crossover with Dexter's Laboratory would be interesting. Johnny might stumble into Dexter's secret lab, thinking it's some kind of cool hangout. Dexter would be initially annoyed but then they could team up to stop a common enemy, like an evil robot that has escaped from Dexter's lab and is causing chaos in the city. Or a crossover with Courage the Cowardly Dog. Johnny goes to visit Courage's farmhouse and gets caught up in all the spooky happenings there.
One interesting idea could be the subversion of the typical Johnny Bravo dynamic. Instead of the girls being just eye - candy, they are smart, which can lead to really engaging and unexpected interactions. For example, they might outwit Johnny in humorous ways.
Maybe there could be a crossover where some of the characters from Harry Potter, like Hermione, are fascinated by the technology and magic in Samurai Jack's world. They could study the different forms of magic there and try to incorporate it into their own magical knowledge. And in return, they could teach Jack some basic spells to use against Aku.