Well, there might be a Vampire Morty fanfiction where Morty is turned into a vampire by an evil Rick from another dimension. He then has to use his vampire powers to fight against this Rick and save his own Rick. It could involve a lot of action and some cool vampire - related abilities like super speed and strength.
In some Vampire Morty fanfiction, Morty could be the only vampire in his world. This would make him an outcast, but also give him unique powers. He might meet other strange creatures during his journey as a vampire and form unexpected alliances. Maybe he teams up with a werewolf - like character to take on a common enemy.
One interesting Morty and Jessica fanfiction could be about them going on an adventure together in a parallel universe. Maybe they have to work together to solve a mystery that involves saving their town from an alien invasion.
One interesting Rick and Baby Morty fanfiction could be about Rick taking Baby Morty on a journey through a strange alien planet. They might encounter unique creatures and Rick has to use his intelligence to protect Baby Morty.
There might be a fanfiction where Rick discovers that an old acquaintance is pregnant and he has to deal with the moral and ethical implications of it. Since Rick is often amoral, this could lead to a really interesting story arc as he tries to figure out what to do. For example, he might be tempted to use the pregnancy for some sort of scientific experiment but then has a change of heart.
One interesting 'Rick and Morty Reaction Fanfiction' story could be about how Morty reacts when Rick takes him to a parallel dimension where everything is made of candy. Morty might be initially excited but then realizes the dangers, like getting stuck in a chocolate quicksand. Another could be when Rick shows Morty a new alien species that Morty has a really strange and comical reaction to, perhaps he faints from shock at their grotesque appearance.
One interesting plot could be Morty traveling back in time to prevent Rick from creating a certain dangerous invention. This would lead to a whole new set of adventures as Morty tries to change the past without messing up the entire timeline. Another plot might be Morty getting stuck in different time periods and having to find his way back to his own time with the help of various versions of Rick he meets along the way.
One common theme is power and its abuse. Since Rick is already a very powerful character, as a vampire he becomes even more so. The fanfiction might explore how he uses or misuses this power. Another theme is the struggle between good and evil. Is Rick's vampirism a curse that makes him more evil, or can he still be a force for good? Also, the theme of family loyalty often comes up. Morty's loyalty to Rick might be tested when Rick becomes a vampire.
Some stories might focus on the characters' interactions. For example, Morty could be really intrigued by Naruto's ability to use chakra and Naruto might be equally fascinated by Rick's portal gun. It could lead to all sorts of adventures and misadventures as they try to understand each other's worlds. But not all of these fanfictions are well - written, so you have to be a bit picky when exploring them.
One interesting aspect could be those that explore alternate universes where their relationship takes on different dynamics. For example, a story might have Rick and Morty in a world where they are more equal partners in their adventures rather than the typical mentor - mentee. Another could be a story that delves into their emotional bond in a very intense way, showing how they rely on each other in difficult situations. And there might be some fanfictions that play with the concept of time travel within their relationship, like going back to fix mistakes in their past interactions.
The 'Rick and Morty' universe is so wild and full of possibilities. Fanfiction allows writers to explore different scenarios for Summer and Morty that might not be shown in the actual show. For example, they could be in a situation where they have to save the entire multiverse, which would be a great adventure to read about. It also gives a chance to develop their characters further and see how their relationship might change in various circumstances.
One popular 'Rick and Morty Summer x Morty fanfiction' story might involve Summer and Morty going on an adventure together without Rick. They could explore a new planet and have to rely on each other's skills to survive. Maybe Summer uses her street - smart knowledge while Morty uses his scientific knowledge he's learned from Rick.