venom_(marvel)
A shapeshifting villain/anti-hero from the ]] series of comic books published by Marvel.
Venom is an alien symbiote that initially attaches itself to [[Peter Parker, leading to the creation of the Symbiote Suit (or the black Spider-Man suit). However, the power boost granted by the alien entity proves to corrupt Peter's mind, and he rids himself of it - leading the scorned creature to take over Parker's rival, Eddie Brock, and swear revenge, eventually settling into the role of an anti-hero.
The symbiote was first introduced as Spider-Man's new black costume in The Amazing Spider-Man #252 (May 1984) as part of a story called "Homecoming!" The story takes place after Spider-Man's return from the events of the miniseries Secret Wars, where he first obtains the black costume. The full first appearance of Venom is in The Amazing Spider-Man #300 (May 1988), after the symbiote bonds with Eddie Brock.