Avengers #12 1999

Avengers #12, published by Marvel in January 1965, presents "This Hostage Earth!" Giant-Man investigates an underground threat after his teammates dismiss his warnings, leading to his capture by the Mole Man. Allied with the Red Ghost, the Mole Man plots to accelerate Earth's rotation. The Avengers intervene, ultimately thwarting the villains' scheme. This issue is notable for the first appearance of the character Monk Keifer and includes a fan letter from a young George R.R. Martin, adding a unique appeal for collectors.