Osborn led the Dark Avengers in patriotic armor as Iron Patriot. he used villainous members disguised as Earth's Mightiest Heroes.
A dark variant of the Black Knight named Proctor led the Collectors, which included alternate versions of the Avengers like Swordsman, Magdalene, and Anti-Vision.
The leader was Voodo and included such members as Captain Wolf, Frankencastle, Thor the Accursed, a monstrous Black Widow, a vampire Wolverine, a demonic Daredevil, and so on.
The superpowered daughter of Luke Cage and Jessica Jones, Danielle Cage, Bruce Banner Jr./Hulk Jr, Dwight Barrett as the new Ant-Man formed the Wasteland Avengers
Captain Assyria led the Egyptian god Horus, rewritten versions of Storm and Photon, an Egyptian Iron Man, and the New Warrior Nova.
Dylan Brock of Earth-1051 became the symbiotic villain Codex. He could control other symbiotes and use them to overwhelm the Avengers.
On Earth-3931, the Avengers were corrupted by a vampire Captain America after the evil Baron Blood became the Sentinel of Liberty.
Captain America led one of the darkest versions of Iron Man known as the Steel Corpse, along with assassins like Jessica Drew/Redback, Ghost Rider and Hulk.
In the Secret Empire event, the evil Steve Rogers, who would become Hydra Supreme, manipulated and corrupted some of his former allies into his own shadowy team of Avengers.
The ancient demonic forces possessed and corrupted the immortal life of the universe into diseased and tumorous monsters. Mar-Vell led corrupted avengers