To start of with the obvious. It is impossible for any human mind to understand the psychology of an omnipotent, omniscient, omnipresent (from now called all powerful for short.) being, because what those powers imply is beyond the capacity of our minds. But still most people believe they can, by reflecting their own psychology on their chosen god. God is kind, just, our father, our savior, our ruler, our king, our judge.. add your own powerful human characteristic. So basically a human with great powers, viewed trough the eyes of believers living in ancient civilizations.
Eye of god, the Helix Nebula
Lets start with the biology. An all powerful being is not a man or a father, not because it's a woman, but because it doesn't need sex-organs to procreate. An all powerful being would also be limited in a human body, and the way we know anatomy today there is no room for such capabilities in our bodies. An all powerful being got the power to cram all this capabilities into a body, but for what reason. No god have ever shown any interest to present itself, and with the hole universe as a playground without any physical present needed , appearance would probably be no priority.
Next up is the moral leader characteristics. Gods are precised as rulers and judges, they give us moral guides and punishes our sins. Why would an all powerful being give vague hint to what is right and what is wrong, when it just could implant the rules in our head on creation. Some say free will, but why would it still care when it already know all our actions trough life before our creation. The answer is it wouldn't. Even with free will intact an omniscient being would find a way. There is no point in creating faulty beings, and then punish them for being faulty. No all powerful being would blame its creation for being faulty. It would blame itself.
Hand of god, PSR B1509-58
God the king. You need to believe and love your god. This is probably the most human characteristic given to gods. The need to be popular, be seen, loved and believed is first nature in our social settings. What an all powerful being would get from this is questionable. It got no need to interact with us, and is completely aware of our limitations for knowing it. An all powerful being that made us, also don't need our permission to rule us.
Why would an all powerful being even make us?
Possibility 1: For science. In 2003 Niklas Boström published the simulation hypothesis and proposed that all of reality, including the Earth and the universe, is in fact an artificial simulation. To learn about his arguments:
https://en.wikipedia.org/wiki/Simulation_hypothesis
Any maker and controller of this simulation would be our all powerful god. They would not exists in our universe, but with our knowledge of the laws of physics, it probably is the only way to be all powerful.
Possibility 2: Nostalgia. This being could have evolved trough evolution and technology, on the same path as humans do, and want it to happen again.
Possibility 3: To pas the stick from its own dying universe to our new universe. If an (almost) all powerful being see its death in a dying universe, but got the power to create a new universe it can't inhabit. The new universe with its inhabitants would then be it's descendant.
This post is an attempt to look past the psychology of humanity when giving a god psychological traits , but it's still just based on my opinion and speculation, and your suggestions could be as good as mine.