Fantastic Four #10 1997

Fantastic Four #10, published in 1962, features the dramatic return of Doctor Doom. Rescued by the alien Ovoids, Doom uses their mind-transferring technology to switch bodies with Reed Richards, attempting to dismantle the Fantastic Four from within. This issue is highly notable for collectors as it marks the third appearance of Doctor Doom and the first appearance of the Ovoids. Crucially, it also includes the first Marvel Age appearance of creators Stan Lee and Jack Kirby as characters within the story, adding a unique meta-narrative element.