The ⚨ symbol.
A mix of the mars (♂) and venus (♀) symbols.
It can be used to refer to characters that have an androgynous appearance, characters that are intersex/hermaphrodite/futanari, or characters with a non-binary gender identity.
It can be shown pointing in any direction, and the direction is sometimes used to distinguish androgyne and intersex.
Closely related to and commonly interchanged with with the male-female symbol (⚥). Distinctly separate and not to be confused with the transgender symbol (⚧).