The imperigender flag.
Imperigender is a gender in which one is genderfluid and one's current gender can be, at least somewhat, controlled by the oneself.
History
Imperigender was coined by schrodingers-zombie on or before August 22nd, 2014.[1]
Flag
The flag was created on June 4, 2018 by Tumblr user arco-pluris (AKA Mod Kau on Beyond-MOGAI-Pride-Flags).[2]