How strong is the Hulk? Hulk is able to withstand a blow from Karnak of the Inhumans. (Hulk vs. Karnak)
Seeing the Inhumans under attack by the NYPD, Bruce Banner transforms into the Incredible Hulk in order to lend a hand. The Inhumans seeing The Hulk as their opportunity to show the world that they are not a threat attempt to subdue the jade giant and “save” the city. They get more than they bargain for when The Hulk proves to be an almost unstoppable force.
Karnak, the one who finds the fault in all things, probes ol’ jade jaws and finds that his weakness is his chest, right over his heart and attempts to exploit this weakness.
The results were disastrous….
From: The Inhumans #12 (1977)