Venom Symbiote is a fictional character appearing in American comic books published by Marvel Comics, commonly in association with Spider-Man.
Venom was originally conceived as a supervillain, but has since become more of an antihero. Venom is a Symbiote, a sentient alien, with a gooey, almost liquid-like form. As with real-world symbiotes, it requires a host, usually human, to bond with for its survival. After bonding, the Symbiote endows its enhanced powers upon the host. When the Venom Symbiote bonds with a human, that new dual-life form refers to itself as "Venom".