I’m aware of the Peasants, Nobility, Fairies, LOTR characters, and Pirates. What other types of characters are acceptable for the Faire?

I’ve been trying to do internet research for costume preparation but I’m not able to find what I’m looking for, which specifically is the "barbarians" or people that wear beards, leather, and fur.
What are they called exactly? Links or pictures would be great.

Thank you!