The Beyond is the unknown "place" beyond all of existence holding all Monocosms, such as The Barrel. Beyond the Omniverse, beyond The Outside, and beyond The Barrel. What lies beyond could be something completely different from what many would perceive as existence.
Within this void, an Absolute infinite number of Monocosms can be found, each Monocosmos inaccessibly Transcend each other, inaccessibly piling upwards for all eternity, To entities who can only comprehend forms of existence within their own Monocosm, these many alternate Monocosms may appear as a field of shining lights, each light being a separate Monocosm. The -verse containing this great void and all the Monocosms found within it is known as the "Beyond Bubble".
The stability of the many Monocosms within our Beyond Bubble is administered by a group of six Cosmic Entities with power even beyond that of Creator, known as The Supergod Council.
All science and philosophies are null and do not apply to the beyond, as it exists far beyond them. The only thing's that can really describe the Beyond are abstract concepts and some theories.
Discovery
An entity who came to be known simply as The Omniversal Traveler exited the Omniverse to find any existence beyond the immeasurably large void known as The Outside. This led him to discover Beyond and its many shining lights. This was a form of existence completely beyond anything he ever knew even existed, hence he named it 'Beyond'.
Transcendentem is a barrier encompassing an immeasurably infinite number of different Beyond Bubbles. The purpose of Transcendentem is to separate these Beyond Bubbles from each-other, as two Beyond Bubble merging would have apocalyptic consequences.
Reality is so fundamentally different outside Beyond compared to inside it that should two Beyond Bubbles merge, it would cause unfathomable amounts of chaos as the two contradictory forms of existence destabilized each-other.
Information
There is an entity, stronger than everything in every beyond-iteration in Transcendentem, but not as powerful as some Aspect Lords, named The Guardian Of The 5th Wall who maintains Transcendentem and prevents any and all Beyond Bubbles from merging and causing such chaos.
The wall itself is equally different from reality within Beyond, such that any entity who exits their Beyond Bubble and enters Transcendentem without sufficient power will suffer the same fate as those who find themselves in two merged Beyond Bubbles. (Such as was the case for Venrensorys.)