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Princess Kaguya (かぐや姫 Kaguya hime), also known as Yayoi (弥生), was an alien princess that appeared in Ultraman Leo.

Subtitle: Moon Alien (月星人 Tsuki Seijin)


Ultraman Leo

15 years prior to the series, Kaguya was sent to the Earth after being hunted by enemies on the moon while she was still a child. Kaguya later found a shining bamboo. After cutting it open, he found inside it Kaguya as an infant the size of his thumb along with her people's crescent moon necklace that she would wear when growing up. He rejoiced to find her as he and his wife foster Kaguya as Yayoi as they raised her as their own child. As she grew older, Yayoi made her living by became one of the trainers at the Jonan Sports Center.

In the present, she was contacted by Kirara whom wanted her to return to the moon. However, Yayoi/Kaguya refused, having grew fondness towards Earth even her own foster family won't let her go. Kirara still wanted her to return and flew towards Earth to retrieve her by force. MAC sensed this and resort to protect her from Kirara at all cost. At night, Kirara landed and began to fire a green beam on the woman. Though it didn't endanger her but Yayoi appeared in her princess outfit, changing her back to her original status as a moon princess. The monster quickly created an earthquake that shatter her hometown and Princess Kaguya walked towards him. Gen transformed into Ultraman Leo and dragged Kirara away from Kaguya. As they battled the princess tried to halt both sides and decided to return. Kirara fired her crescent moon necklace, causing her to fall but revived her princess nature. Both Kirara and Princess Kaguya returned to the moon via a yellow light.


  • Actress: Hizuru Ono
  • Princess Kaguya and the episode she debuted was in reference to the Japanese folklore The Tale of the Bamboo Cutter.
  • Princess Kaguya shared similarities with Yuko Minami, the former co-human host of Ultraman Ace. As shown, both came from the moon and lived on Earth due to safety precautions.
    • The main differences between Yuko and Kaguya are that Yuko's civilzsation was devastated by Lunaticks, whereas Kaguya's homeland is still fully intact, with its people residing in cities near the Moon's equatorial region.
  • Like the Underground Men and Underground People, it is unknown if Yuko's people are the same as Kaguya's people.


  • Height: 152 cm
  • Weight: 43 kg
  • Origin: Moon
Powers and Weapons
  • Telepathy: Kaguya can communicate with Kirara via telepathy.
  • Hover: Kaguya was shown hover towards Kirara.


Ultraman Leo Kaiju
Giras Brothers | Alien Magma | Alien Tsuruk | Kanedoras | Alien Karly | Kendoros | Vekira | Guiro | Ron | Alien Kettle | Bango | Alien Vibe | Antales | Alien Flip | Alien Atler | Alien Wolf | Bat Girl | Batton | Alien Boze | Bock | Dogyuh | Alien Alpha | Northsatan | Garon | Littre | Alien Coro | Renbolar | Carolyn | Alien Sarin Dodole | Gamerot | Alien Clean | Satan Beetle | Pressure | Oni-on | Planet Apple Chicken | Alien Paradai | King Paradai | Uriy | Uringa | Alien Magma II | Rolan | Alien Virmin | White Flower Spirit | Princess Kaguya | Kirara | Alien Akumania | Ashuran | Sevenger | Taishoh | Alien Atlanta | Alien Mazaras | Specter | Alien Babarue | Black Directive | Black Star | Silverbloome | Black Dome | Absorba | Demos | Black Garon | Blizzard | Mayuko | Hungler | Black Terrina | Satan Mora | Nova | Alien Bunyo | Black End