Heiter's adopted daughter. After his death, she came under the care of Frieren. Fern grew up to be a strict and mature person beyond her age. Acts as a mother for the members of the squad. She constantly helps Frieren perform simple daily tasks, such as waking her up, dressing her, cooking. She behaves condescendingly with Stark, although they are about the same age, for example, scolds when he goes to bed late. Despite her outward steadfastness, Fern easily gets upset and can behave like a child if she is offended by something.
