Don't fall for that "genderless" propaganda. Arceus is either female or a functional simultaneous hermpahrodite.
"Why?" you ask? Because Arceus created pokemon (and humans) as in gave birth to them. Males can't impregnate themselves and give birth anon. But you know who can? Certain female species (parthenogensis) and certain simultaneous hermaphrodites like snails are capable of impregnating themselves.
There. With literally facts and science I confirmed that God is not male or "genderless".
Kneel before my facts and logic.