Bast is Kvothe's assistant, student and friend who lives with him at the Waystone Inn. He is a main character in the frame story and was present for the majority of Kvothe's narration.

Bast is described as dark and charming, with sharp and delicate features, a quick smile, and cunning blue eyes. He wears a black long-sleeved shirt, black pants and soft black boots. Bast is later revealed to be a Fae creature under glammourie.

His true appearance is similar, except that his eyes become fully blue with no sclera and his boots become cloven hooves. He is over 150 years old and a noble of the Faen Courts. His full title is Bastas, Son of Remmen, Prince of Twilight and the Telwyth Mael. He moves 'with a strange delicacy and grace as if he were close to dancing'.