Iron Man #14

The title "To Challenge the Fantastic" says it all — this March 1999 issue throws Iron Man headlong into a clash alongside the Fantastic Four, with the armor-clad Avenger looming large at the top of the cover while Mr. Fantastic, the Human Torch, and the Thing engage a colossal, roaring green threat below. Sean Chen's pencils and Lary Stucker's inks give the scene real kinetic weight, staging four of Marvel's heaviest hitters against a single massive antagonist in a way that practically leaps off the page. A thoroughly entertaining team-up chapter from the Busiek/Stern era of Invincible Iron Man.