Powers and Stats
Origin: DC Comics/Vertigo
Powers and Abilities: Super Strength, Invulnerability, Omniscience, Omnipresence, Reality Warping, Telepathy, Soul Manipulation, Shape Shifting, Matter Manipulation, Non-Corporeal, etc.
Destructive Capacity: Unknown.
Lifting Strength: Unknown
Striking Strength: Unknown (But defeated The Spectre with one finger)
Durability: Unknown (Was apparently the equal darkness to its counterpart's light, and the two fused together, but it is uncertain whether or not said counterpart was The Presence)
Note: The Great Evil Beast is presumably just one aspect of The Primal Monitor, along with The Presence, the Hand, Wally the God-boy, The Source, etcetera.