Allogender, also known as zedgender, is an umbrella term for people who are not agender, nor in the agender spectrum. This term is not necessarily a gender identity itself.
The term is derived from allosexual, which is a term for all people who are not asexual. Since "agender" and "asexual" use the same prefix (a-) their opposites should also have the same prefix (allo-).