Nekron (DC)

Nekron is a cosmic supervillain and dark god originating in the DC universe and is mostly an enemy of the Green Lantern and Captain Atom though his grand-scale could very well put him in league with any of DC's big villains if he ever succeeded in his goals.

Powers/Abilities
Nekron is depicted as a being of immense power, possibly limitless in scale - though he seems unable to enter the living universe. Among the least of his known abilities are raising the dead, firing bolts of dark energy, killing with a single touch and growing without limit.