Someone who fluctuates between different genders under the Genderblank umbrella e.g. between blankboy, blankandrogyne and neutrablank. Could also be called Blankgenderflux or Genderblankflux.
History
The term Blankflux was coined by tumblr user nonbiarrow on 15/05/2021, as well as its flag.
Flag
The flag takes the symbol from the genderblank flag. The colours are blue for Blankboys, yellow for Blankenbies, pink for Blankgirls and indigo for Xenoblank people.