Planet L77
Greater Location: Leo Constellation
Inhabitants: Ultraman Leo
Leo's family
Other Ultras
Ruler: Leo's Parents
Type of Government: Monarchy

Planet L-77 (獅子座L77星 Shishi-za Eru Nana-ju Nana Hoshi lit. Planet L77, of the Leo constellation), was the original home planet of Ultraman Leo and Astra. However, later the planet and its civilization was destroyed by an individual Alien Magma and his kaiju twins the Giras Brothers.


Seen in the opening title sequences of the Ultraman Leo TV series just before it's destruction. In space it appears to be a blue planet, however on it's surface it appears near identical to the Earth in terms of its natural beauty. The architecture of the planet appears very similar to that of the Land of Light's.

Story 0 Manga

In the Story 0 Manga, the planet is shown to be very Earth like in appearance. Its culture paralleled Earth's medieval European culture with castles, and a king, but had access to advance weaponry such as laser weapons. It's people were shown to be visually identical to humans.

Known Inhabitants

Leo Kingdom


  • Although known to be destroyed by Alien Magma, it is accepted by fans and implied by Astra's biography that an army of Alien Magma destroyed the planet. However Leo's dialogue in the Eng Sub says that the Alien Magma I that appeared was solely responsible with his twin monsters.
  • L77 is similar to the Land of Light, both were planets home to Ultras that were once similar in appearance to Earth and whose inhabitants originally resembled humans.