Penn

They're a spirit of balance - or so they claim, anyway. Their idea of what is "equivalent" and "balanced" turns out to be extremely warped in practice. They have a shop of little oddities in a pocket dimension, doors to which open in several places around the world. In said shop, one doesn't pay with money, but instead other things - the manner of which depends on what you're intending to buy. Lifespan, a limb or two, your soul - could be anything, really.

design notes:
- Order of the symbols on their bracelets doesn't matter