A flashy death led to his reincarnation into the multiverse of one of the most dangerous and exciting works of fiction. 

An unintended stopover at the bleed dimension associated with the DC multiverse ultimately led to the demise of his Guardian System.

Outraged and swearing revenge at the perpetrators of this grievance, witness Acheran's journey from a cannon fodder existence in the Marvel World to become one of the most powerful Cosmic beings in the wider Omniverse as the Primal Cosmic Sage.