Invincible Fanfiction : Indestructible

Having failed in the main continuity to recruit Mark Grayson the "entity" uses the last of its power in a desperate move to replace the mind of a Mark Grayson from another timeline with the ideal personality of a man from a dying Earth to ensure the survival of humanity in it's universe, rewinding not only time but bending existence to its will to create the anomaly that will be known as Indestructible.