AceShowbiz - Woody Harrelson is indeed in "Venom (2018)", though he has never been featured in any sneak peeks of the movie. In fact, moviegoers are not going to see him in the full movie, unless they're staying in their seats until the mid-credits scene.
The "Three Billboards Outside Ebbing, Missouri" actor only pops up briefly in the said scene, but it's enough to reveal his big role. The veteran actor is playing [SPOILER ALERT!] Cletus Kasady a.k.a. Carnage, who has been rumored to appear in the Tom Hardy-starring flick without any actor confirmed to take the role.
In the mid-credits scene, Hardy's Eddie Brock is seen visiting Kasady in prison. Everyone will recognize the character portrayed by Harrelson with his red hair. The scene also hints at the Marvel supervillain's appearance in a possible sequel, which will only happen if the first movie performs well at the box office.
Centering on the Spider-Man villain, "Venom" follows Eddie, who's investigating the mysterious Life Foundation. Its leader, Carlton Drake, has been testing the interaction of symbiotes on humans to create a higher being. When Eddie becomes infected with one of these alien creatures, he transforms into the anti-hero Venom.
Riz Ahmed stars as Drake, with Michelle Williams playing Brock's girlfriend Anne Weying. Jenny Slate, Reid Scott and Scott Haze also join the cast. Ruben Fleischer serves behind the lens, with the script provided by Scott Rosenberg and Jeff Pinkner. It is due out in U.S. theaters on October 5.
Hardy recently said that his favorite moments were embedded in "30 to 40 minutes" of footage which didn't make the cut into the final film. He later explained that the cut scenes didn't have anything to do with the storyline.
"I think that's been misunderstood," the British actor explained. "What I'm saying is that I had a lot of time improvising and a lot of freedom to play with Venom. In honesty, there's probably about seven hours or more worth of footage of me playing as Venom and enjoying myself."