Justice League (The New 52) Vol. 5: Forever Heroes

As the Crime Syndicate hunts down the few heroes left foolish enough to challenge them — including Batman’s protege, Dick Grayson — Owlman has other plans for Nightwing, and Owlman’s teammate: the most deadly being on the planet: Ultraman! Also, Cyborg is one of the lone Justice League members left to fight against the villains that have taken over. How can he possibly find a way to defeat them? Who can he turn to? Two words: Metal Men!

Collects Justice League #24-29.