Tail Universe

For every universe in the Omnicosm, there is an equal and opposite universe to match it. Each pair is woven around by Ouroboros in a lemniscate shape (∞), and the center of this shape where Ouroboros infinitely consumes its own tail is the Sourcecore.

Any universe facing Ouroboros's tail is referred to as a Tail Universe (also known as the Negative Universe (ex. A-), the Minus, the "B-Side", the "Tails" Universe, the Inverse or Obverse).