Foo Fighters allows bundles of plankton to exist in a humanoid form. Adopting a personality as well as the nickname F.F., it sides with the protagonists of the story.
Foo Fighters takes two main appearances. Naked, it is a tall, dark, robotic humanoid of masculine proportions, and an alien visage, meant to resemble something insectoid or reptilian. It has the appearance of a chameleon, a mutant, or a space alien, and also possibly resembles an alternate version of Hierophant Green. Later, it maintains the appearance of the dead prisoner Atroe; a woman of average height and slim build.
As F.F.'s identity develops due to her experiences with Jolyne, the true form of her Stand takes on a more human appearance starting to resemble the body she took over while still retaining some of the features of its older form.
- Main article: Foo Fighters
Foo Fighters is highly intelligent and originally commanded with the task of protecting a collection of Stand DISCs by Whitesnake. Jolyne and Ermes help the Stand discover its own consciousness and identity, giving it the nickname, "F.F.". It is implied that if the entirety of Foo Fighters's plankton colony is killed and the Stand is reduced back to a DISC, they will lose all of their memories, learned experiences, and identity, once again becoming a mindless Stand when re-introduced to a new plankton colony.
Foo Fighters is a unique fusion of a plankton colony and Stand. It is proficient in close combat and possesses a set of useful abilities. At a physical level, Foo Fighters is more than a match for the power type Stone Free, being able to deflect its punches and overpower it. Although Foo Fighters is particularly resilient to physical attacks, it is very dependent on a constant water supply to keep the colony in water and breaks down the moment it is dehydrated.
Foo Fighters' peculiar nature as a sentient colony of plankton gives it several abilities.
First and foremost, Foo Fighters' nature means that it has no physical weakness. There is no limb to hurt or vital point to strike to kill it and thus it is impervious to conventional attacks. Only by damaging the whole colony can Foo Fighters be threatened. Although fragile individually, the colony can muster enough strength to pry open an automatic door.
As a hive mind, Foo Fighters can produce sub-bodies by splitting the colony into several like-minded but independent parts. This ability allows Foo Fighters to effectively fight multiple opponents and generally act stealthily in the middle of battle. Even if the vast majority of the plankton dies, only one needs to survive for Foo Fighters to be able to regenerate. As long as there is water, the plankton colony can rapidly multiply, quickly creating a new part of Foo Fighters and giving it great regeneration ability. With enough water, Foo Fighters can even cover a whole room and use its mass to attack.
On the other hand, Foo Fighters is extremely susceptible to dehydration. If its moisture is sucked away by dry matter, the plankton colony rapidly dies and will disappear. Foo Fighters thus needs constant access to water to survive.
Bound to actual physical plankton, Foo Fighters is visible to ordinary humans.
By infiltrating someone's body, Foo Fighters can take over their consciousness and have access to their memories. That way, it can wear their skin as a disguise to infiltrate human society. It took over the corpse of Atroe and spends the rest of the story impersonating her. It can also shape its host to its liking and contort itself beyond what a human can do.
The parasitism allows Foo Fighters to survive without a constant intake of water, but it reduces its ability to multiply and disperse itself as dramatically as it would in a large body of water. Moreover, it becomes susceptible to the host body losing moisture by bleeding out.
Due to a limited source of hydration, Foo Fighters can generate only so much plankton mass when operating inside a host body. Although she does occasionally seep out small bundles of her colony as an extra limb, or as a way to invade tight spaces and nearby liquids, Foo Fighters has devised two novel distinct uses for her abilities on land - a ranged offensive weapon and a healing technique.
The most unorthodox use of her abilities is demonstrated when Foo Fighters disperses the individual planktons through about a third of a cup of water to shape it into a small mirror floating in mid-air.
Foo Fighters appears as a non-playable boss character in the mobile game Monster Strike.
Puzzle & Dragons (Android/iOS)
Foo Fighters was obtainable for a limited time as an Assist Evolution in the mobile game Puzzle & Dragons.
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