King in Black: Iron Man / Doom

In this 2021 Marvel one-shot, writer Christopher Cantwell and artist Salvador Larroca pit Iron Man and Doctor Doom against Knull's symbiote horde. The issue finds the two armored rivals forced into an uneasy alliance as the King in Black's invasion reaches their doorstep. It's a focused, high-stakes clash of egos and technology, showcasing how even the most bitter enemies must cooperate when faced with an extinction-level threat.