Some people believe god made everything and doesn't have a gender. Clarification: god = made everything. Let me explain a contradiction: think of the universe (or the possible multiverse) as a scratch project. God is the person who created that scratch project. Now, if god made everything, that means he existed before everything else. That cannot happen: nothing can exist in nothingness, otherwise it won't be nothingness. As for the point that he doesn't have a gender: Jesus clearly has a mother and father, and he is the son of god, so you can work out logically that there has to be male and female gods.
To @Sir_Gavin: I'm interested to see how you'll respond.