All our gods are ancient. They've been around so long that they went to sleep and then were revived from fossils! The first one, though, who created the rest, was around even before that, and it's never been asleep as a fossil or anything like that. It's above the gods, and even the Voices, who come from another world and don't all follow the same god, follow it. We call it by a couple of names, but the most common is "Arceus, the Streamer." ...The Voices just call it "Streamer-senpai." I'm not sure why.