The Incredible Hulk #327

The green Hulk and the crackling, white-hot electrical entity Zzzax clash in a collision of raw power on this January 1987 cover, with the tagline "When Zzzax Attacks… What a Shocker!" setting an appropriately charged tone. A small inset in the corner spotlights a grey Hulk, hinting at the dual-Hulk intrigue waiting inside. Cover art by Al Milgrom makes the most of the fiery orange-and-red backdrop, giving the whole confrontation a fierce, kinetic energy that's hard to look away from.