Foo Fighters (also known as "F.F.") is her own Stand and Stand user, granted to her via a Stand DISC. F.F. originally works for Enrico Pucci as a guard for the priest's DISC collection, but she eventually allies herself with Jolyne Cujoh out of gratitude. F.F. can change her appearance at any time. She can reconstitute herself, fill and seal the wounds of others with her flesh, project her own flesh as bullets, and has rapid regeneration. However, her usual appearance is that of a deceased prisoner named Atroe.