The Hub is at the centre of C103, also know as the Yggdrasil Complex. This is a place where gods, humans and many other species coexist and work together to keep the Complex running smoothly. It's a mass trading port, an exploration base, a mapping station and much more.
These are the gods who don't work for the Hub. They often have no idea the Hub exists, or sometimes even hate it.
Anomalies are those who have broken or are breaking the very fabric of the worlds and reality. Often they are those thrown from the Afterworld, or undead or even sometimes those with too much premor power. They are usually hunted down by multiversal mercenaries.
The Skull Pantheon is a group of old gods, all of whom are skulls. That's it. Just skulls.
However, many of them have stolen or made a body for themselves. Some, like Arawn, made one from metal. Others, like Ifrit, stole clothes from a shop and animated them.
All of them, however, have floating skull heads. Early on they discovered the problem of their head constantly floating away from their body. Everyone now uses chains or rope or some other way of tying them together.