Necrogender

Necrogender can be defined as a gender that used to be there, but is now gone or dead.

Necrogender was coined on June 24, 2014 by tumblr user baaphomett.

Flag colour and meaning
The flags were created on September 12, 2015. There are three flags, necrogender, necroboy and necrogirl.

The colours are very dark to symbolize 'dead-ness'.