Avengers, The #169 (1978) First Print

"If We Should Fail -- The World Dies Tonight" Jason Beere, an industrialist competitor of Tony Stark wearing an armored costume, invades Avengers Mansion and challenges Iron Man, Captain America, and the Black Panther. Quickly defeated, Beere proves to be dying and has planted four bombs set to explode when his heart stops beating, thus ending all life on Earth with his own death. Captain America secures the first bomb from a Peruvian temple, the Black Panther defeats a polar bear in the Arctic to retrieve the second, and Iron Man invades Moscow to locate the third. The final device, however, is attached to Beere's heart and cannot be safely removed, so Beere is placed in cryogenic suspension to keep both himself and the world alive.