 Joan is an elderly ghost and one of the Underworld Office employees in Underworld Office: Offline Mystery Visual Novel.
 As an elderly woman, Joan has wrinkles and ashy skin despite being a ghost. Her white hair is tied in a tight, low bun. She wears a pearl necklace, an indigo cardigan, a pair of black circular glasses, and a black dress that extends past her knees. She hunches over when standing and relies on a cane to walk, although she is shown to be able to walk perfectly without it.