Matronly owner of the local tavern.
An old, wise and learned wizard, he tends to forget more about the world than most people have learned, most often the most basic things.
A socially inept and ugly human monk, with a smattering of arcane skills, on a quest of vengeance to find his mentor’s killers.
The size and number of knots in hair, tied around neck, or hanging from belt could signify family, importance, worship, guild affiliations. Being able to translate the meaning of the size and placement of knots can give you a a large understanding of who somebody is.
May be used in a more barbaric society. Where in cities peoples clothes and crests show who they are, barbarians have no need for this so use knots.