Cancer King Karkat, dead and in the dreambubbles, sitting next to the John who died in order to take him down.
"YOU SHOULD'VE SEEN THEM, JOHN. MY FRIENDS. FOR ONCE... THEY ACTUALLY GOT ALONG. FAR, FAR BETTER THAN THEY DID IN OUR OLD TIMELINES. FINALLY, I.... FELT LIKE I WAS A GOOD LEADER FOR ONCE. I JUST WISH I DIDN'T HAVE TO STOP BEING A GOOD PERSON TO DO IT."
i don't know what these two do after this, but i like to imagine they have a bittersweet ending, y'know? karkat goes out and tries to heal the damage he caused with the powers he gained, or he goes out as a ghostly knight of blood to protect the ghosts from people like him, or he and john just go out into the dream bubbles to heal for the rest of time...whatever they do, though, at least it's finally together.