Why is rhys fulton- Doyle cool?

Rhys Fulton-Doyle is a fictional character, so the idea of him being "cool" is subjective and depends on the context of the story he's in.

To answer your question, we need more information:

1. What story or media is Rhys Fulton-Doyle from? Is he a character in a book, movie, TV show, or video game? Knowing this helps us understand his character and the traits that make him cool within that specific context.

2. What defines "cool" for you? Different people have different ideas of what makes a character cool. Is it their personality, their skills, their appearance, or something else entirely?

Once you tell us more about Rhys and your definition of "cool," we can discuss why he might be considered cool.