What's the plot of Venom 2?
With Riz Ahmed's Carlton Drake (who eventually fused with the symbiote Riot) out of the picture after, uh, exploding inside a spaceship towards the end of the first film, Eddie and Venom's initial nemesis will most likely not be back. Luckily, Venom's mid-credits scene was a strong, bankable indicator as to who is going to fill the villain void in the sequel.
Woody Harrelson's character Cletus Kasady was revealed in the scene. Brock, once again working as a journalist, interviews Kasady, a captured serial killer in prison. It’s creepy as hell, but there’s not much to go off of plot-wise other than Kasay’s promise that, "When I get out of here -- and I will -- there's going to be carnage."
That line is an on-the-nose reference that confirms Kasady’s identity. In the comics, he merges with a symbiote named Carnage, a kind of "offspring" that Venom shed once while breaking Brock out of prison. Carnage bonds on a deep level with Kasady, developing violent abilities that even Venom doesn't possess. It's uncertain how much of Carnage and Kasady's storyline will be pulled from the source material for Venom 2, but we can be certain that it's going to bloody and violent as all get out.
Deadline also reports that, according to two sources close to the project, comic book villain Shriek has been also incorporated into the plot of Venom 2. A Sony spokesperson declined to comment, stating that the project is still in its early stages. In the comics, Shriek is a drug dealer named Frances Barrison, whose severe trauma caused her latent mutant powers -- which include sonic blasts, flight, and the ability to incite dark emotions -- to emerge. Historically, she's both Carnage's accomplice and love interest, so her addition to the sequel makes sense. Currently, Naomie Harris (Moonlight) is in talks to star in the role.