The Shadow (Yeb Prow'dodsh in The Pencil Language) is a creation of Vood'Em before he had been trapped in BEYOND HELL. It is a ginormous creature living underneath The Table. It eats the realities underneath it for food. The Shadow can eat almost anything. It can eat even the very tough materials, like Primordial Delta. The Shadow can not be seen in the visible spectrum. It must be seen using infrared cameras. If anything touches the Shadow, they will begin to corrode and melt in a dark, burning acid puddle. This is why the Shadow is so powerful. When the Shadow runs out of realities to eat, it will eat The Table itself.
On one occasion, a hole appeared in The Table. The Shadow was underneath eating The Table, and many creatures saw the terrifying creature beneath. A few hundred undecillion realities, voids, and particles fell into the hole and got eaten by the Shadow. Many omnipotent gods tried to stop it. They were successful, but many got eaten.