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 beyond-mogai-pride-flags on June 4, 2018[1].
Flag
The flag was created on June 4, 2018 by tumblr user arco-pluris (AKA Mod Kau on Beyond-MOGAI-Pride-Flags).