The core of the Multiverse was a hypothetical region within the Multiverse outside of all universes. It was fundamentally a region consisting of portals which lead into all the universes in the Multiverse. However, due to the fact no definite laws of physics or of time existed within this core, it could take any form simply by using the energy from a sentient brain. There was no shortage of energy here; in fact, the energy here was more than in any universe.