Not to be confused with Neularian.
Nebularian, or stellunarian, is a non-binary gender from the galactian alignment system. It is a combination of stellarian and lunarian. A nebularian person can be fluid between the two genders or can be both at the same time.
The nebularian flag was posted on Tumblr by user Temp-Nb-Blog on December 5, 2016, along with the other combination flags.