In 2007, Spider-Man 3 gave us the initial end to Tobey Maguire’s time as the character. It featured a load of villains, including Venom but the gooey character was way different from source material. Fans loathed it, but, now, one has come up with a neat reason for it.
Today, the notion the entity is actually an evil force from Hell is getting some traction on the section of Reddit where people post various fan theories. As the poster points out, Raimi often weaves the supernatural into the projects he works on. As well, the film does not confirm if the “substance” as it is referred to came from space at all when Peter goes to Dr. Connors for analysis and the writer also says its shapeshifting is a thing demons can do, while Tom Hardy’s version of Venom does not seem to have the skill. Others in the replies dismiss the idea and point out many of the bits in the film come from comics, while, for another — though it may not have merit — there is definitely a sort of allusion happening with what Raimi chose to depict on screen with the project.