One main theme is the clash of personalities. Doofus rick is, well, a doofus, while evil morty is calculating. Their interactions often highlight this contrast. For example, in many fanfics, doofus rick will do something silly that throws off evil morty's carefully laid plans.
Another theme is the exploration of power dynamics. Evil morty is usually the one in control, but doofus rick's unpredictability can sometimes shift that balance. In some fanfics, this leads to a power struggle between them as they both try to assert their own influence over their partnership or situation.
I'm not sure if it's still available, but 'Doofus Rick's Influence on Evil Morty' was quite a good one. It examined how doofus rick, with his unique way of thinking, gradually changes evil morty's perception of the world around them. It had some really deep character development and a great plot that kept you hooked from start to finish.
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.
One more thing that makes these fanfics unique is the way they can twist the relationships in the show. Evil Morty's presence can change the dynamics between Rick and Morty. For instance, Morty might start to question Rick more if he sees what an Evil version of himself is capable of. And Rick might have to reevaluate his relationship with Morty in light of this new threat. This creates a whole new set of story possibilities that are unique to these fanfics.
A prevalent theme is the struggle with morality. Rick is a morally ambiguous character, and in fanfic, this is often explored further. For example, how Morty is influenced by Rick's actions and how he tries to find his own moral compass. Also, the theme of friendship outside of their family bond is quite common. They meet all kinds of strange beings, and sometimes form unexpected friendships.
In such a fanfic, one aspect could be how Jessica views Morty. She might initially be dismissive or not even notice him, but as the story progresses, she could start to see his hidden qualities. Also, the fanfic could play with the different dimensions in Rick and Morty. For example, there could be a dimension where Morty and Jessica are already a couple, and Morty from our main dimension tries to learn from that version of himself to win Jessica in his own world.
One possible plot is that Morty gets a device from Rick that can make him more appealing to Jessica. But things go wrong, and instead of attracting her, he ends up making a fool of himself in front of her. Another plot could be that Jessica gets into some kind of trouble, and Morty has to step up and be the hero to save her, which makes her see him in a new light.
One common theme is adventure. Since Rick is always traveling across dimensions in the show, fanfictions often include the reader joining him on these crazy adventures. Another theme is the contrast between Rick's cynicism and the reader's more optimistic or naive view, which can lead to interesting character development.
There could be a fanfic where Rick and Morty accidentally swap bodies. This would lead to a lot of comical situations as they try to adapt to each other's lives. Morty - in - Rick's - body might struggle with handling Rick's advanced technology, and Rick - in - Morty's - body would have to deal with Morty's school and family life in a very different way.
One idea could be that Morty discovers a way to redeem Evil Morty. He tries to show Evil Morty that there's a better way than his villainous path. Morty could use his own experiences of growth and kindness to reach out to Evil Morty.
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.