tabletop... doesn't really have a cast tho. you have a world but there's no cohesive cast that everyone deals with like in canon fandoms.

in fact a lot of the early D&D novels started out as a bunch of tabletop campaigns that the authors just formatted into a novel format.

i mean if tabletop isn't that special, then everyone in TAZ is a fandom OC because they're playing in a D&D setting and was based off of someone else's worldbuilding.