Interstellar Union
Interstellar Union
Members: Alien Babarue(leader)
Alien Borg(Alien Babarue's right hand man)
Alien Mephilas
Alien Nackle
Alien Temperor
Alien Hipporito
Alien Guts
Alien Zarab
Alien Metron
Affiliations: Alien Baltan
Designations: Universal Domination
The destruction of the Land of Light and its people
Acquire the Ultra Key
Profits and the acquisition of more power
First appearance: Chapter 41
Latest appearance: Finale

The Interstellar Union/Galactic Alliance is a group of villains from the Ultraman Story 0 Manga. They are the second major villains after the defeat of the Baltans.


Main Members


Originally attacking the Land of Light with an army of monsters, they attacked seeking the Ultra Key under the Babarue's direction. However their forces were sent into retreat by Mother of Ultra's power, who erected a protective aura around the planet, seemingly at the expense of her own life. However, before that Father of Ultra was kidnapped and a message was sent to the Ultra Brothers, demanding the Ultra Key in exchange for his life.


  • The Union is the first known instance of an Organization whose members are aliens and who seek to conquer the Earth, not protect it.
  • Depending on the translation, Galactic Alliance is also a suitable name for their group.