The multiverse is a set of all universes. Together, these universes are presumed to comprise everything that exists: the entirety of space, time, matter, energy, information, and the physical laws and constants that describe them. The only thing that exists outside of the Multiverse are Gods from different religions, like Christianity, Hinduism, Islam, and Buddhism, and gods from Mythologies as well, they exist outside of the Multiverse because they are transcendent beings.