So I've seen these groups on FA for a bunch of things, and I though it could be fun to try and make one myself. In the world I've built, there's an adventurer's guild. The guild has little sub guilds in it, think like clans in MMOs. Here's the idea I had for it

Joining the guild requires your oc(s) in fantasy equipment or clothes, as well as how they fight in battle or some kind of guild job like a merchant, treasurer, alchemist, etc. I'm still brainstorming it, but if you have any thoughts on this please let me know in the comments^^