The Red X is the main antagonist of the game.

While initially perceived as a monstrous entity, Red X's true nature is shrouded in mystery. Some scholars speculate that Red X is not a single being but a collective consciousness formed from the remnants of a long-forgotten civilization. This theory suggests that Red X feeds on the negative emotions of sentient beings, growing stronger with each soul it consumes.

Red X's arrival on Halcandra was marked by a phenomenon known as the Crimson Eclipse. The skies turned blood-red, and the stars seemed to flicker and dim. It was during this time that Red X first appeared, manifesting as a swirling vortex of darkness. The entity's true form is elusive, often changing shape to instill fear and confusion. Some accounts describe it as a towering shadow with a red X as a face, while others speak of a mass of tentacles and mouths, constantly shifting and writhing.