BIRTH
Enrico Pucci had a shack of Stand disks near prison grounds, a collection of different Stands that he had collected over the years while in prison. The area around the shack is generally untouched and desolate. Enrico needed a guardian for these disks, lest they fall into unwanted hands. He threw a random Stand Disc into the ocean, which hit plankton floating on the surface. Unexpectedly, F.F. was born.
GUARDING THE STAND DISCS
F.F., or Foo Fighters, was told to stay there by Pucci and to kill anyone (other than him) should they come close. Having no other purpose, it did as it was told. When Jolyne and Ermes approached the shack during an outdoor activity, F.F. attacked but was soundly beaten by both of them. Parched and close to disintegrating, it lamented its meaningless life, but was spared by Jolyne, who gave it water, despite Ermes' protests. Fascinated by its savior, it showed Jolyne her father's missing Stand Disc in gratitude. Subsequently, F.F. inhabited the body of a dead inmate and followed both of them back to prison.