Firegender

Firegender is a xenogender that is in a constant state of change that never truly extinguishes. It is aesthetically linked to fire as a visual metaphor or symbol.

History
Firegender was coined on or before July 26, 2014 by Tumblr user deanwinchesterinmyheart.

Flag
The flag was created on or before August 29, 2015 by Pride-Flags on DeviantArt.