Buddha is NOT a God. The "Buddha" that you are referring to might be "Śākyamuni"? He's the founder of Buddhism but he is NOT God. He's like a teacher of Buddhism, sorta similar to the prophets in many of the religion but he is NOT Buddha even though he's being regarded as one by many but that is NOT correct. And all those multiple deities in the so called metaphysical form with all those statues that you see people pray to in those temples only exist in folklore legends but in true Buddhism, they all represent an ideal. Buddhism is a bit complicated in that it exists in two different forms, the traditional "folklore" form and the spiritual or the true form.