Fantastic Four #176

The Impossible Man is front and center on this November 1976 cover, the green shape-shifting Poppupian bursting through what appears to be a Marvel Comics conference room — comics and artwork scattering everywhere — while the Thing rears back a stone fist and a blue-suited Mr. Fantastic scrambles nearby, with the Human Torch and Invisible Girl looking on from portrait insets above. The cover text declares him "more powerful than ever," and the chaotic scene, rendered by the combined talents of Jack Kirby, John Romita, and inker Joe Sinnott, makes that claim feel entirely plausible. Roy Thomas and George Pérez bring their own energy to this playfully self-aware issue, where Marvel's own offices serve as the unlikely battleground.