Clark Backo, best known for “The Changeling” and “Letterkenny,” has joined the cast of Sony and Marvel’s “Venom 3.” The Tom Hardy-starring threequel, which is set to hit theaters on Nov. 8, also features Juno Temple and Chiwetel Ejiofor in undisclosed roles. Similarly, character details for Backo are being kept under wraps. Kelly Marcel helms […]