Foo Fighters or just F.F. is a major ally that appeared in Stone Ocean, the sixth part of JoJo's Bizarre Adventure. This character is a mix of Stand and Stand User, which body is composed of plankton and can contort into impossible curves and even slip through barred fences unharmed. Foo Fighters has a human form with green hair and a robotic one with an alien visage. Anime cursor with JoJo's Bizarre Adventure Foo Fighters.