Apogender is a subset of agender in which one feels not only genderless but entirely removed from the concept of gender.
History
Apogender was coined on the 11th of July, 2014 by theangrybi, a now-inactive tumblr blog.
Flag
The flag was created by pastelmemer on tumblr in July 10th, 2016.
Etymology
Apo is a Greek word that means away from.