One great John x Karkat fanfic is 'A Strange Bond'. It beautifully explores their relationship as they navigate the challenges in their world. The author does an amazing job of portraying their personalities and how they grow closer over time.
One common theme is the idea of opposites attract. John and Karkat have very different personalities, and fanfics often play on how these differences can actually bring them together in a unique way.
One plot idea could be them going on an adventure together in an alternate universe within the Homestuck world. They could face new challenges and enemies while also developing their relationship.
Another option could be Tumblr. There are many Homestuck fans on Tumblr who might share or recommend 'karkat x john' fanfics. You can search for relevant tags or follow Homestuck - related blogs to see if they have any suggestions.
Often, the comedy in this comic lies in the visual gags and the way the story is presented. The expressions of the characters and the way the scenes are drawn can add a lot to the funny factor.
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.
The Gamzee x Karkat comic has a story that keeps you on the edge of your seat. It combines drama, adventure, and a touch of mystery. The relationship between the two main characters is at the core of the narrative, creating a compelling read.
Another theme is the journey of self - discovery for both characters. The relationship can act as a catalyst for them to learn more about themselves. For example, the reader might help Karkat become more in touch with his emotions, and in turn, Karkat might help the reader become more confident. It's about growing together in the context of their relationship.