Carnage the alien symbiote that gave Eddie Brock the power of Venom spawned a child. This creature bonded to a deranged serial killer called Cletus Kasady, and the two began a blindly murderous path through New York City as the monstrous Carnage. Carnage was swiftly defeated, however, and his symbiotic suit was apparently destroyed.
The insane Kasady was jailed at Ravencroft Asylum. However, his visit was short-lived as he revealed that the alien had mutated his blood, and he could generate a copy of the symbiote (this was later retconned so that the alien had survived, and bonded to his blood). Kasady escaped, freeing other superhuman inmates and assembling a "family" of killers around him. They set their sights on New York.
During the murderous onslaught that followed, Carnage recruited Shriek, Doppelganger, Demogoblin, and Carrion to do his bidding, terrorizing New York City with their twisted "family values." Due to the laws of escalation, Spider-Man and Venom were forced to join together to stop Carnage and his followers. They required the assistance of such disparate heroes as Captain America, Black Cat, Nightwatch, Cloak and Dagger, Iron Fist, Deathlok, Morbius and Firestar, although there was a great deal of conflict within this group, both sides polarized between Venom's desire to stop Carnage for good and Spider-Man's refusal to allow any more life to be lost.
However, both infighting between the villains and a successful rout from the heroes contributed to Carnage's defeat. Faking his death by covering a victim in a mock symbiote costume, he threw all of the heroes off his trail except for Spider-Man and Venom. The two tailed Carnage all over New York until they cornered him in a graveyard. Weak from days of combat, Spider-Man was saved from Carnage by Black Cat. Taking advantage of the Cat's return, Venom took on Carnage and tackled him into an electrical generator before disappearing from the scene, leaving Carnage to be incarcerated.
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