Venom 2, a.k.a. Venom: Let There Be Carnage, finally arrives this week! But for the non-comics fans out there, some may be asking... who exactly is the very red, very scary symbiote bad guy in this movie?It all started with Spider-Man's black alien costume in the comics, which betrayed him and wound up in the hands of his bitter rival Eddie Brock -- who became Venom.