Aliengender

Aliengender or Aliegender is when one's interpretation of gender/their gender(s) feels as though it's from a nonhuman perspective. One may or may not adopt a gender or attempt to fit into a gender but it feels like it's in an "alien trying out foreign species’s gender" sort of way. Aliengender is likely intended for alienkin, or other nonhuman kin people, however one does not have to be kin to use the term. Aliengenders can be xenic in nature but do not have to be.

History
Aliengender was coined in 2014 by a since-deactivated tumblr user with the handle "genderghoul." It was submitted to and posted on Mogai-Archive, the first real archive of MOGAI terms, making it one of the original generation of MOGAI terms.

Flag
The flag was designed by an anonymous submitter to the archive blog Beyond-Mogai-Pride-Flags on June 18, 2018.

Nyaliengender
Nyaliengender, also known as meowtiangender, is a xenogender which combines both catgender and aliengender. This may or may not be a kingender.

Resources
https://beyond-mogai-pride-flags.tumblr.com/post/175031196450/i-made-a-flag-for-aliengender-and-wanted-some

https://purrloinsucks.tumblr.com/post/95720622604/aliengender