Nekron is the physical embodiment for the Black Lantern Corps which are powered by death.

He is revived as a member of the Black Lantern Corps.

Both sides are later seen reunited as members of the Black Lantern Corps.

Recently revived as a member of the Black Lantern Corps.

Revived as a member of the Black Lantern Corps.

Brain Wave's corpse is reanimated as part of the Black Lantern Corps.

His body was later revived as part of the Black Lantern Corps.

He is one of many dead super-villains revived as members of the Black Lantern Corps.

He later participates in the final battle against the Black Lantern Corps.

Of the 2,793 remaining sectors left, at least half of them have come under attack from The Black Lantern Corps.