Mai-Kubi (舞首 Mai-Kubi, lit. Dancing Heads) is a Yōkai made of vengeful spirits men with three heads that are joined together as one. They are said to be spirits of men that are bound together.
These heads are individually known Kaze-Kubi (風首 Kaze-Kubi, lit. Wind Head), Hi-Kubi (火首 Hi-Kubi, lit. Fire Head) and Kaminari-Kubi (雷首 Kaminari Kubi, lit. Thunder Head).
In the 2007 anime, Mai-Kubi is composed of three large heads: Kaze-Kubi, Hi-Kubi, and Kaminari-Kubi, each having long teal hair, bushy eyebrows matching their skin and eyes with yellow sclerae, thin red irises and black pupils. The left head Kaze-Kubi has green skin, light purple lips, a light patch of peach fuzz, eyebrows pointing downward, straight hair and big eyes with pale yellow sclerae. Hi-Kubi, the right head, has red skin, a light patch of peach fuzz, eyebrows pointing upward, a balding head and thin eyes. Finally the top head Kaminari-Kubi has blue skin, a thin blue mustache, thin bushy eyebrows that stand up, thin eyes and wild hair.
The three heads of Mai-Kubi do not get along and will bicker and fight against each other.
They were one of Japanese Yōkai that assembled to fight against Western Yōkai Army.
It appears along with Hone-Onna in episode #41 of the fifth anime adaptation, Overthrow Kitarō! Nezumi-Otoko's Great Counterattack.