Morty could be the most interesting in a way. He's the underdog in his own story, and in a crossover, his naivete combined with Naruto's heroism could lead to some really heartwarming and funny moments. Also, seeing how he reacts to Naruto's world and skills could be a great exploration of his character growth outside of his normal relationship with Rick.
Rick would be the most interesting. His unpredictable nature and vast scientific knowledge would create a lot of chaos and new possibilities. He could mess with Naruto's world in ways that no one else could, like creating new types of jutsu through his technology or transporting Naruto to bizarre dimensions.
I think it depends on the situation. If it's a battle in Naruto's world, Naruto would have the home - field advantage. He knows the terrain, has allies, and his chakra - based powers are well - suited for that environment. But if it was in a more open, multi - dimensional space, Rick might be more powerful. He could use his portal gun to quickly move around, avoid attacks, and bring in reinforcements from other dimensions. Morty, on the other hand, is not as powerful as either of them, but his unique perspective and ability to sometimes surprise people could also play a role in certain scenarios.
Rick and Tony Stark would be a really interesting pairing. They are both super - intelligent inventors. Rick's off - the - wall and often unethical scientific methods would clash with Stark's more morally - guided approach. It would be fascinating to see them argue over the best way to build a device or solve a problem.
Rick and the Warden would be really interesting. Rick is so used to being in control and having his own set of rules in his own dimension. The Warden, on the other hand, is in charge of the chaotic Superjail. Their clash of egos and different ways of handling things would make for great drama. Rick would probably try to outwit the Warden, and the Warden would try to assert his authority over Rick.
Rick and the Warden. Rick is this super - intelligent, amoral scientist, and the Warden is this insane, power - hungry figure in Superjail. Their interactions would be wild. Rick would probably try to outwit the Warden at every turn, while the Warden would be fascinated and also threatened by Rick's intelligence and gadgets.
Rick and Makarov would be an interesting pairing. Rick's scientific knowledge and Makarov's wisdom and leadership of the Fairy Tail guild could lead to some really cool interactions. They could exchange ideas about how to run their respective groups and also work together to solve problems.
Definitely Rick and Dipper. Rick is this super intelligent, jaded scientist who has seen so much of the multiverse, and Dipper is this young, eager mystery - solver. Their interactions would be really interesting as Dipper would be constantly asking Rick questions and Rick would be either annoyed or reluctantly impressed by Dipper's inquisitiveness.
Morty and Brian could be a great pairing. Morty is often the more moral and naïve character in Rick and Morty, while Brian is the somewhat jaded family dog in Family Guy. They could have conversations about life, mortality, and the meaning of existence. Morty might be intrigued by Brian's writing and Brian could be both amused and concerned by Morty's adventures with Rick.
Rick and Dipper would be really interesting. Rick's cynical and scientific view would clash with Dipper's curious and somewhat naive nature. Dipper would be both fascinated and a bit intimidated by Rick's intelligence and his access to other dimensions. Rick might see Dipper as a young, impressionable mind that he could either corrupt or mentor in a strange way.
Rick and Grunkle Stan would be really interesting. They're both kind of cynical in their own ways. Rick could be dismissive of Stan's 'hustles' at first, but then they might find common ground in their experiences dealing with the strange and unknown. They could end up swapping stories about the weird things they've seen in their respective universes.
Naruto and Rick are quite popular. Naruto's positive and determined nature contrasts with Rick's cynical and intelligent personality. Their interactions can lead to really interesting storylines, like when Naruto tries to understand Rick's complex technology and Rick is bemused by Naruto's unwavering belief in his friends and his ninja way.