Tom Hardy Eddie Brock / Venom Chiwetel Ejiofor General Rex Strickland Juno Temple Dr. Teddy Paine Clark Backo Sadie Christmas Rhys Ifans Martin Moon Stephen Graham Detective Mulligan Peggy Lu Mrs. Chen Alanna Ubach Nova Moon Hala Finley Echo Moon Dash McCloud Leaf Moon Cristo Fernández Bartender Andy Serkis Knull (voice) Jared Abrahamson Captain Forrest Ivo Nandi Javier Jack Brady Jim - Security Brooke Carter Young Teddy Paine Fflyn Edwards Thaddeus Paine Reid Scott Dr. Dan Lewis Jake Allyn Las Vegas Security Guard Otis Winston Donald the Security Guard Jacob Tomuri Tuxedo Guy Elijah Isaiah Cook Area 51 Soldier Martin McDougall The General