Venom organ failure. Many caterpillars have defensive venom glands associated with specialized bristles on the body, known as urticating hairs, which can be lethal to humans (e.g., that of the "Lonomia" moth), although the venom's strength varies depending on the species. Bees synthesize and employ an acidic venom (apitoxin) to cause pain in those that they sting to defend their hives and food stores, whereas wasps use a chemically different alkaline venom designed to paralyze prey, so it can be stored alive in the food chambers of their young. The use of venom is much more widespread than just these examples.
Venom (comic book) Human Fly. Brock is involuntarily recruited onto the team after being possessed by the Toxin symbiote which Thompson stole for Crime Master in "Venom" #12. The Savage Six is sent after Thompson and his loved ones after he tries to murder Crime Master, resulting in Betty's learning Thompson's secret identity. Crime Master is ultimately unmasked as Betty's brother, Bennett Brant. Venom immolates Toxin and Brock, defeating Crime Master's remaining forces; Betty shoots Crime Master dead to save Venom. Venom later confesses his covert actions to the Secret Avengers. Jack O'Lantern escapes and goes on a killing spree to torment Venom,