Tom Hardy Eddie Brock / Venom Woody Harrelson Cletus Kasady / Carnage Michelle Williams Anne Weying Naomie Harris Frances Louise Barrison / Shriek Reid Scott Dr. Dan Lewis Stephen Graham Detective Mulligan Peggy Lu Mrs. Chen Michelle Greenidge Mugging Victim Laurence Spellman Patient Little Simz Little Simz Jack Bandeira Young Cletus Scroobius Pip Siegfried Amrou Al-Kadhi Host Two Brian Copeland Rodeo Beach Reporter Stewart Alexander Warden Sean Delaney Young Detective Mulligan Ed Kear Reveler Christopher Godwin Headmaster (1997) Rocky Capella Valet Car Park Greg Lockett San Francisco Police Department Officer Sonny Ashbourne Serkis Plunger Man Otis Winston Street Man Reece Shearsmith Priest Akie Kotabe Victim's Brother J.K. Simmons J. Jonah Jameson (uncredited) Tom Holland Peter Parker / Spider-Man (uncredited) Erwin Felicilda Carnival Adult (uncredited)