Tales of Suspense #84

In "The Other Iron Man!", Tony Stark faces a crisis when he suffers a heart attack just before testifying before Senator Byrd’s committee. While recovering, he’s confronted by persistent rumors that he and Iron Man are one and the same—rumors he denies, even as the press continues to question the connection. Determined to clear the air, Happy takes matters into his own hands, taking flight in an Iron Man suit to prove the truth, unaware of the chaos his actions might stir.

In "The Super-Adaptoid!", Captain America faces an unprecedented threat when a mysterious foe absorbs the powers of every Avenger he summons, evolving into a terrifyingly adaptive enemy who wields the combined might of the team. With the fate of the heroes hanging in the balance, Captain America must outthink a foe who mirrors every move, every ability, and every strength he's ever known.