The Secret Empire hired the mercenary Boomerang to steal plans for the Air Force's Orion Missile, but he was defeated by the Hulk.

[2] This Secret Empire infiltrated Roxxon Oil's Brand Corporation, tried to ruin Captain America's reputation,[3] and kidnapped several mutants—specifically Havok, Polaris, Beast, Iceman, Angel, Mastermind, Mesmero, Blob and Unus the Untouchable—to harness their energy to power a "flying saucer".

Number One landed the saucer on the White House lawn, and, after defeating the Empire's "replacement" hero—the first Moonstone—demanded the government surrender control to him or he would detonate nukes in every major American city.

[5] Writer Steve Englehart specifically intended this issue as a metaphor of the Watergate case and the Nixon era.

The Defenders defeated Professor Power and the Secret Empire, as well as their agents Mad Dog and Mutant Force.

[9] During the Round Robin story arc in The Amazing Spider-Man, Midnight was sent out on his first mission: kidnap the super-hero Nova so that the Secret Empire could transform him into a cyborg as well.

The realization that his lover was insane caused Midnight to aid his mentor and his allies against the nurse, ultimately sacrificing his life to destroy her.

Many Secret Empire members simply believe it is an organization like the Masons or the Elks, which was a perfect cover for criminal enterprises.

[volume & issue needed] During the Dead Man's Hand crossover, the various warlords who attend the meeting begin attacking each other nearly right away.

Mickey Fondozzi and Microchip, associates of the Punisher, had been captured while spying on Strucker and claim to be Four and Eight, members of the Secret Empire.

[volume & issue needed] Some time later, agents of the Secret Empire battle the vigilante group known as the Jury.

During the fight against the Secret Empire, Robert Maverick's Red Hulk form was able to level their volcanic island base.