In 'karkat meets the sufferer fanfiction', it could potentially explore the relationship between Karkat and the Sufferer. Maybe it shows how Karkat's personality clashes or gels with the Sufferer. For example, if the Sufferer has a very solemn and serious nature and Karkat is his brash self, there could be some interesting interactions. It might also delve into the backstories of both characters and how their meeting affects their individual story arcs within the context of the fanfiction. There could be elements of adventure or mystery as they interact, like uncovering some long - forgotten secrets in their world.
The main characters are clearly Karkat and the Sufferer. Karkat is likely to bring his own unique traits, such as his feisty personality. And the Sufferer, with whatever characteristics are attributed to him in the fanfiction, will also play a major role in the story.
Karkat is highly emotional. His passionate outbursts and strong opinions can create interesting dynamics in a 'Karkat x Reader' fic. He's not afraid to speak his mind, which can lead to both humorous and intense interactions with the reader.
There's a great piece where female Karkat is part of a time - traveling adventure. It delves deep into her character, showing her determination and unique personality traits. In this fanfiction, she teams up with other characters from the original source material in unexpected ways. It's really engaging to read how she overcomes the various challenges in the different time periods.
You can try Archive of Our Own (AO3). It has a large collection of fanfiction from various fandoms, and there are bound to be some great Meenah x Karkat stories there. Just use the search function and type in their names.
One good one could be 'Meenah and Karkat's Unlikely Bond'. It shows how their different personalities, Meenah's brashness and Karkat's grumpiness, come together in an interesting friendship that might develop into something more. Another is 'Under the Sea with Meenah and Karkat' which takes place in a unique underwater setting and explores their relationship in that context.
Another theme could be redemption arcs. Maybe Eridan has done something wrong in the story's context and Karkat helps him to become a better person. It can be a really interesting way to develop their relationship within the fanfiction.
I'm not sure if there are any extremely popular ones in the mainstream sense. But within the Homestuck fandom, there may be some well - known fan - made stories. You can look at the top - rated Homestuck fanfiction on popular fanfiction sites to see if any involve Karkat in a romantic plot.
You can try Archive of Our Own (AO3). It has a large collection of Homestuck fanfictions, including those about Eridan and Karkat. Just search for 'Eridan x Karkat' in the search bar and you'll get a bunch of results.