Nekron is a comic book supervillian appearing in books published by DC Comics, specifically those related to Green Lantern. Created by Mike W. Barr, Len Wein and Joe Staton, the character, who exists as an embodiment of Death, first appeared in Tales of the Green Lantern Corps (vol. 1) #2 (June 1981). He is the primary antagonist in the "Blackest Night" storyline that was published in 2009 and 2010.
Nekron is a fictional embodiment of Death and ruler of a region adjoining Hell that also seems to border on Limbo and Purgatory within the DC Universe. It is where the souls of the dead await passage to their final residence in either the Silver City or Hell. Nekron draws his power from the souls and spirits of all those who have ever died.
After the Oan scientist Krona was converted into pure energy, that energy somehow reached Nekron's realm; a rift opens between the dimensions due to the paradox of an immortal now being in the Realm of the Dead. Desiring the living world he is now able to see, but being too large to pass through the rift, Nekron recreates Krona as an undead being of enormous power instead. Given an army of similarly-restored spirits, Nekron sends Krona to kill the Guardians of the Universe in order to increase the size of the rift. Krona cooperates because part of Nekron's plan involves collapsing the universe so as to recreate it according to his own desires (which would give Krona the chance to see a universe being born). Krona and his minions kill several Guardians and Green Lantern while destroying the Central Power Battery to prevent the Lanterns from recharging their power rings. Although his attack is powerful enough to shatter the morale of the Green Lantern Corps, Hal Jordan manages to inspire and rally his fellow Lanterns into attacking Krona with the charge still left in their rings. Nekron is defeated when Jordan enters the realm of the dead and incites the spirits of the recently-killed Lanterns to rebel against him. This gives the Guardians enough time to banish Krona into the dead realm and close the rift with Jordan still trapped inside. The spirit of Jordan's predecessor, Abin Sur, helps him escape the realm.
Nekron later battles the demon Nebiros, following the destruction of Doctor Fate's Tower Of Fate. Also appearing in this issue is Jared Stevens (Fate).
Read more about Nekron at Wikipedia ...
Official Site: DC comics
Links: Wikipedia Comicvine.com DC wikia