At the start of the Chaos War by Fred Van Lente, Greg Pak and Khoi Pham, Nightmare relishes the coming of the Chaos King, considering him an ally. The Chaos King scoffs at this and kills him, saying that nothingness is bigger than evil.
Spoilers
At the start of the Chaos War by Fred Van Lente, Greg Pak and Khoi Pham, Nightmare relishes the coming of the Chaos King, considering him an ally. The Chaos King scoffs at this and kills him, saying that nothingness is bigger than evil.