 Tom Hardy did a ton of improvising off various weird bits he noticed in various filming locations, including the infamous lobster tank scene where Eddie climbs in and takes a seat in the lobster tank as he's burning up from a fever. In the comics, the Venom symbiote was initially worn by Peter Parker as a Spider-Man suit after he finds it on another planet before eventually separating and bonding with Eddie Brock. However, the movie makes the symbiote's independent discoveries of the Life Foundation, removing any connection to Spider-Man whatsoever. Indeed, the giant white spider insignia that typically appears on Venom's chest is absent.