 Tom Hardy is not as much of a comic book nerd as the studio would have you believe. In fact, before Venom, he was kind of vocal against the superhero genre, but he still agreed to play Venom. There is one particular reason why he did that. Tom Hardy's son, Louis Hardy, is a huge fan of Venom. When he heard the news that the director of the movie had approached his father for playing the anti-hero on screen, he was ecstatic and convinced Tom to take up the role. Hardy was not at all familiar with Venom and his character backstory. His son had to teach him most of those things before the shooting began. Tom Hardy recorded his lines for the Venom symbiote during pre-production, and they were played back to the actor through an earpiece onset during scenes where Brock and the symbiote talked to each other. At around 1 hour and 30 minutes, the Venom symbiote recommends chocolate. According to the 1995 miniseries Venom, The Hunger, symbiotes need a chemical phenethylamine, which is available in brains and chocolate.