 Nekron uses the Anti-Monitor as a physical power source within the Black Power Battery.It is alluded to in several comics and ""Origins and Omens"" backstories that it is the Anti-Monitor's desire for the end of humanity that made him the primary candidate to become the Battery's power supply following his betrayal and subsequent murder at the hands of Superboy-Prime during the "Sinestro Corps War".In a climactic battle with all the collective Lantern Corps, the Anti-Monitor is nearly freed from the Power Battery and revealed to have only succumbed partially to Nekron's influence (manifested by the visual Black Hand symbol seen on every Black Lantern only being half completed), demanding that he be freed so that he could exact revenge on Nekron for his imprisonment.