Aaron Bahr is a human wizard and dean of the Wilhelm Library. He joined the library at a young age and became the dean when the previous dean passed away.

Aaron was born to bailiff parents who owned a bit of land, which they sold to allow him to go study. He spent two years in the local parish before being kicked out for bringing scrolls back to his home to read at night. After a few years of unsuccessful jobs, he befriended the previous dean of the Wilhelm Library and was hired as a scribe.