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Globally, קאקו (Kaku , Kakko , קאקו ) is a common gender-neutral forename. The given name קאקו is habitual in India, where it is quite a rare epicene name, Nigeria, where it is quite a rare dominantly male, but seldom feminine name, and Oman, where it is a rare boy's name. In absolute terms, it most frequently occurs in India, Nigeria, and Indonesia. Likewise, קאקו is the last name as well as the forename.
קאקו is also a name for the fictitious and mythical characters: Kaku , the fictional character from One Piece.