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Foo Fighters
Foo Fighters (フー・ファイターズ, Fū Faitāzu), more commonly referred to as F.F. (Fエフ・Fエフ), is a major ally featured in Stone Ocean.
F.F. is a mix of Stand and Stand User; A colony of plankton that is organized, maintained by, and essentially equivalent to the Stand, Foo Fighters. At first serving Enrico Pucci/Whitesnake, they soon ally themself with Jolyne Cujoh out of gratitude for being spared.