Ergender

Ergender is a gender that is a little bit boy, a little bit girl, a little bit non-binary, and the rest of one's gender is something else.

History
Ergender was coined by Tumblr user arigenderdefender on or before June 12, 2018.

Flag
The flag was created by DeviantArt user Technologyfurs on June 12, 2018. Pinkish represents femaleness, blue represents maleness, neon blue represents non-binary, and dark blue represents a primordial soup of gender (the something else one may experience).