This category contains all material that exists in more than a single universe. Martians and Greys are two perfect examples of this.
Pages in category "Multiple Universes"
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.