Cletus Kasady was dangerous even before joining with the symbiote that would later be called Carnage.
Kasady would go on to work with Doctor Octopus, serving as his right hand man in an scheme to control the symbiotes. As Spider-Man and Venom found their way into the evil duo's underground lab, Cletus fought his symbiotic father while Spider-Man defeated Octavius. Dragging Spidey after beating Venom, Carnage engaged in an duel with the hero. Spider-Man managed to defeat Kasady through soundwaves, and the symbiote abandoned it's host on the scene, going on to merge with Octavius to form Monster-Ock.