Doctor Doom story.
1st appearance of Valeria.
Diablo appearance.
Giant-size issue. Doctor Doom stars in "This Man, This Demon!" Script by Larry Lieber and Roy Thomas, pencils by Lieber and Frank Giacoia, inks by Vince Colletta. Brief Fantastic Four appearance. The remainder of the issue contains Golden Age reprints: the Sub-Mariner by Bill Everett ("The Sub-Mariner Meets a New Enemy...Fire!"); and, from Young Men 24, the Human Torch, Captain America ("Back From the Dead!"), and the Sub-Mariner. This issue also contains a one-page ad for a Starhawk story that never appeared in Marvel Super-Heroes. John Buscema cover pencils. 68 pages, full color. Cover price $0.25.