F.F. can change her appearance at any time. However, her habitual appearance is that of the deceased prisoner Atroe, a young woman of average height and slim build with burnt orange and green hair/cap styled with serrated edges at the ends on her head. For attire she has a simple prison teal jumpsuit and overalls with "G.D. st JAIL" imprinted on the back. After being assimilated by Foo Fighters, her body is capable of bending itself to the Stand's will.