X-Men: The Complete Onslaught Epic #4
"Unfinished Business" brings the epic Onslaught saga to a thunderous close with a high-stakes showdown that pits the fractured Avengers and a battered Fantastic Four against a collapsing gamma reactor. Written by Scott Lobdell and illustrated by Jim Lee, Whilce Portacio, and Ryan Benjamin, with dynamic inks by Scott Williams and a stellar team of colorists and letterers, the issue delivers intense action and emotional weight. The cover by Adam Kubert and Dan Green captures the chaos perfectly—this is a pivotal moment in Marvel’s 2009 saga, where even the Hulk’s rage may hold the key to salvation.
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Fantastic Four and the decimated Avengers struggle to stop a total meltdown of the gamma reactor. Bruce Banner turns into the Hulk again, but this time Iron Man successfully appeals to the human side of him and is able to get Hulk to help shut down the valves to the reactor.
Plot details indexed by the Grand Comics Database (CC BY-SA).