Gurogender is an aesthetigender related to the Japanese artstyle guro, a violent and gory aesthetic.
Similar genders include gorecoric.
Gurogender was first coined on or before November 28th, 2014 by Nooklicker on Tumblr via MOGAI-Archive. The definition was updated on February 20, 2018 by MOGAI archive and coining blog Uncommongenders.
The flags were created on February 20, 2018 by Uncommongenders' Mod Kyle. The flags have no defined meanings.