Themisbigender is a term under the themisgender umbrella, which refers to an individual who feels like themisfeminine and themismasculine at the same time or feels like 1-49% bigender, but without the agender part like libragender individuals do.
History
This term was coined by Twitter user stickandst0n3s on the 28th of December, 2021.[1]
Flag
The flag is a mix of the themisfeminine and themismasculine flags.