Zombiegender

 is a gender that is slowly being eaten away by something malovelent.

Definitions

 * a gender that is slowly being eaten away by something malovelent [sic], like zombies - Percy K, January 27, 2018

Presumably, this isn't limited to zombies necessarily, and may be likened to another malevolent force.

History
Zombiegender was coined on January 27, 2018 by Percy K via coining/archive blog Uncommongenders. The original flag was posted at the same time.

Perceptions and Discrimination
Zomebiegender people may face the same varieties of discrimination and transphobia that other xenogenders do. MOGAI-Watch made a mocking poem about zombiegender in which they implied identifying as this term means one is insane.