Venom a the symbiote from the Spider-Man comics. The symbiote first appeared in the Marvel Secret Wars comic arc, it attached itself to Spider-Man, after a while Spidey found of from Reed Richards of the Fantastic 4 that it was an alien lifeform. Spider-Man then attempted to remove it and successfully did, the symbiote bonded with Eddie Brock and they became Venom. The Venom symbiote has had offspring, Carnage. The Venom symbiote has also bonded with other characters from the Marvel-616 universe, including The Scorpion. Lately Eddie Brock has become the antihero known as Anti-Venom.