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The power to use the traits of a futakuchi-onna. Variation of Yokai Physiology.
- Futakuchi-Onna Mimicry
The user either is or can transform into a futakuchi-onna, a type of female yokai characterized by their two mouths – a normal one located on her face and second one on the back of the head beneath the hair. There, the woman's skull splits apart, forming lips, teeth and a tongue, creating an entirely functional second mouth. They have prehensile hair, although whether this is under their conscious control varies. Aside of their mouth, they appear perfectly normal women.
The origin of a futakuchi-onna's second mouth is often linked to how little a woman eats. In many stories, the soon-to-be futakuchi-onna is a wife of a miser and rarely eats. To counteract this, a second mouth mysteriously appears on the back of the woman's head. The second mouth often mumbles spiteful and threatening things to the woman and demands food. If it is not fed, it can screech obscenely and cause the woman tremendous pain. Eventually, the woman's hair begins to move like a pair of serpents, allowing the mouth to help itself to the woman's meals. While no food passes through her normal lips, the mouth in the back of her head consumes twice what the other one would.
In another story, the extra mouth is formed when a stingy woman is accidentally hit in the head by her husband's axe while he is chopping wood, and the wound never heals.
Other stories have the woman as a mother who lets her stepchild die of starvation while keeping her own offspring well fed; presumably, the spirit of the neglected child lodges itself in the stepmother's or the surviving daughter's body to exact revenge.
- May not have full control over their hair or mouth, which may act like separate entities.
- May become gluttonous.
- Futakuchi-Onna (Japanese Folklore/Mythology)
- Futakuchi-Onna (GeGeGe No Kitaro)
- Mawile (Pokémon)
- Dayu Usukawa (Samurai Sentai Shinkenger)
- Filia and Samson (Skullgirls)
- Claire Densmore (Miss Peregrine's Home for Peculiar Children)
- Miyabi (Ragnarok Online)
- Kuchi (Neko Musume Michikusa Nikki)