Who are the main characters often featured in 'they both die at the end fanfiction'?

I'm not entirely sure as I haven't read the story in a while, but I think there are two main characters whose names I can't recall precisely. They are two individuals who get the call that they will die that day.

The main characters are Mateo and Rufus.

Coco herself is, of course, a main character in most coco fanfiction. She is the center of the story, whether it's about her music career or her family relationships.

Willy Wonka is of course a main character. He is often depicted as an eccentric and brilliant chocolatier with many secrets. The Oompa - Loompas also feature prominently as his helpers in the factory, with their unique songs and personalities.

Obviously, the Wonderbird itself is a main character. Often, there might be a young wizard or witch who befriends the Wonderbird.

The main characters that usually show up in 2moons fanfiction include Dain. His role in the original is quite significant, and in fanfiction, he can be put into different situations. For instance, he could be involved in a mystery that was not part of the original plot. Also, Ronark is often seen, especially when it comes to stories about the leadership and power dynamics within the 2moons world.

Typically, the main characters from the original work on which the 'in a heartbeat' is based are often the main focus in the fanfiction. However, sometimes new characters can be introduced to add more depth or drama to the story.

Harry Potter is often a main character. Since he has a connection to the place through Sirius Black, he's frequently involved in the stories set in 12 Grimmauld Place. His experiences and growth as a wizard can be explored in the context of this spooky old house.

Obviously, the King of Enchanters himself is a main character. He is often the central focus of the fanfiction, with his powers and actions driving the story. Then there are his loyal followers or apprentices. They play important roles in assisting him or sometimes causing trouble for him. There may also be rival enchanters who are constantly trying to undermine the King of Enchanters' authority or steal his secrets.

There could be a group of characters led by a wise elder. The elder has some knowledge about the dark below but not enough, so they all embark on a journey together. Each character in the group might have different skills like combat, magic, or navigation that are useful in the exploration.