Well, it could be a plot where the Venture Bros' world of super - science and espionage mixes with Rick and Morty's dimension - hopping chaos. The boys from both shows, Morty and the Venture boys, might be dragged into one of Rick's hare - brained schemes. For example, they could be on a quest to find a rare element that exists only in the Venture Bros' universe, and along the way, they encounter all sorts of wacky characters from both shows.
The plot of such a crossover fanfic could start with Rick accidentally opening a portal to the Venture Bros' universe. He and Morty are then caught up in the middle of one of Dr. Venture's experiments gone wrong. The two groups have to work together to fix the mess. Along the way, there would be a lot of comical moments as the different personalities clash. Morty would probably be the voice of reason among all the chaos, while Rick tries to take over the situation with his over - the - top solutions.
Definitely Rick and Brock Samson. Brock is used to being the tough guy, but Rick's unpredictable and often dangerous nature would put Brock on edge. It would be like a battle of wills. Also, Morty and Dean could have some great interactions. They both are kind of the sidekicks in their respective shows and could bond over their insecurities and the crazy things they've been through with their 'mentors'.
Imagine Rick figures out a way to use chakra in his own inventions. He and Morty could end up training with Naruto and the others. Rick would be impatient with the slow progress of ninja training at first. Morty would struggle to keep up with the physical demands. But as they progress, they could introduce new ideas to the ninja world like interdimensional travel for ninja missions. And in return, Naruto could teach them about the power of friendship and loyalty in a way that changes Rick's and Morty's perspective on things.
In a Rick and Morty Avengers crossover, the plot could center around a multiverse - threatening villain. This villain has the ability to disrupt the fabric of different universes, which catches Rick's attention as it could endanger his own universe. The Avengers, on the other hand, are just trying to protect Earth. Rick and Morty get pulled into the Avengers' world. Rick is reluctant to work with them at first but then sees the potential in their combined forces. Morty is in awe of the Avengers and tries to prove himself. Together, they embark on a wild adventure filled with action, humor, and lots of scientific mumbo - jumbo.
A Naruto and Rick and Morty crossover fanfiction might start with Naruto somehow ending up in Rick and Morty's dimension. Naruto would be confused by the strange technology and the different species. Rick would initially be dismissive of Naruto but soon realize his potential. Morty would befriend Naruto quickly. They could then team up to stop an evil force that wants to use Naruto's chakra for its own nefarious purposes across different universes. The fanfiction could explore how Naruto's ninja ethics would clash or blend with Rick's amoral scientific experiments and Morty's simple morality.
One possible plot could be that Rick and Morty accidentally portal into the Gravity Falls universe. They meet Dipper and Mabel, and Rick's technology starts malfunctioning because of the strange magical forces in Gravity Falls. Morty and Dipper team up to try and fix it while Mabel tries to get Rick to participate in some of her wacky Gravity Falls activities.
Well, one possible plot could be that Rick accidentally opens a portal to the Inuyasha universe while trying to find a new energy source. Morty gets dragged along and they meet Inuyasha and his gang. Maybe Rick's advanced technology could be mistaken for some kind of powerful magic by the characters in the Inuyasha world. And Morty could befriend Shippo, since they are both kind of the sidekicks in their respective groups.
One possible plot could be Rick getting accidentally transported to Superjail. He would then use his scientific genius to try and find a way out while also causing chaos. Morty might follow him and they'd have to deal with the insane inmates and warden of Superjail. Maybe Rick would try to make a deal with the warden using some of his inter - dimensional gadgets.
Well, perhaps the Fairy Tail guild somehow gets access to Rick's portal gun. Lucy might be fascinated by the different dimensions it can open. Rick could be intrigued by the magical power sources in the Fairy Tail universe. And Morty could end up learning some basic magic from the guild members. They all then team up to face a powerful enemy that has been causing chaos across multiple dimensions and universes.
Well, an 'Evil Morty' fanfic in the 'Rick and Morty' universe can be really interesting. Evil Morty is such a complex character. In these fanfics, he could be explored further in terms of his motives. Maybe he's tired of being in Rick's shadow or he has some grand plan to take over the multiverse that wasn't fully shown in the show. Fanfics give the writers the freedom to expand on his backstory and what makes him tick.
A possible crossover fanfiction could involve Dipper and Mabel trying to get Rick to help them solve some of the really tough mysteries in Gravity Falls. Rick might initially refuse, but then Morty convinces him. And along the way, they get into all sorts of misadventures with Bill Cipher maybe getting involved and trying to use Rick's technology for his own evil purposes.