A multigender were someone is part man and part gendernull or both at the same time.
The feminine equivalent is Feminull.
History
The term Virnull was coined by tumblr user nonbiarrow on 09/05/2021, as well as its flag.
Flag
The flag shows three stripes, grey for gendernull, blue for male and light blue for being both or inbetween the two.