Plutogender is a xenogender that doesn't always feel like it belongs with or fall into the same category as all the other genders out there. It is reminiscent of how Pluto does not fit in with the planets.
History
Plutogender was coined on or before September 7, 2015 by unknown.
Flag
The plutogender flag was coined on or before September 7, 2015 by Mod Hermy on Pride-Flags on Deviantart.