The Beyond is the unknown "place" beyond all of existence (according to some cosmologies, it may be an infinite set of Omniverses and Godverses). Beyond the Omniverse, beyond The Outside, and beyond The Barrel. What lies beyond could be something completely different than what we call existence. The picture is what it looks like from our perspective.
An entity who came to be known simply as The Omniversal Traveler exited the Omniverse to find any existence beyond the transfinite space within the great void known as The Outside.