Nekronopolis is a city on Angel Island in the alternate future known as Dark Mobius. Once the capital of the Dark Legion's nation, it shows few signs of life; the streets are littered with flickering lampposts, overturned cars, fires, crumbling buildings and cracked pavement. The remaining Freedom Fighters hide within the sewers beneath the city. Its most notable feature is the massively towering statue of Enerjak. (SU: #25, #26)

Nekronopolis was also the name of the city Dimitri, as Enerjak, tried to establish in Mobius Prime.