Venom pretty much hates all criminals. The fact that he teamed up with Sandman in the the third movie was just absurd.
no
One fan's opinion believes that Venom is Spider-Man's strongest villain because Venom shares a lot of the same powers as Spider-Man himself does but Venom shares an advantage that none of Spider-Man's other villains do because Spider-Man's spider-sense does not go off for Venom's presence while it will go off for every other presence.
venom sand man and new goblin
The Sandman and Venom
Green Goblin, Doctor Octopus, Sandman, and Venom
Spider-Man has many villains but his primary nemesis are Lizard, Kraven, Mysterio, Venom, Green Goblin, Doc Ock, and many more
In the recent Spiderman movies: 1) Green Goblin, 2)Dr. Oct, and 3) Venom
Sandman and Venom were the bad guys. Harry Osborn became a new version of the Green Goblin to seek revenge for the death of his father- Norman Osborn who had been the original version of the Green Goblin.
Spider-Man doesn't have a 'main villain' and, like most superheroes, fought a variety of characters. His main villains would likely be Dr. Octopus, Green Goblin, and Venom. (The majority of his villains follow an animal theme: Scorpion, Dr. Octopus, Rhino, Vulture, Venom/Carnage (spider), etc.)
No, Spider-Man is not related to Venom in any way.
No one is the villain in Spider-Man 4 because Spider-Man 4 does not nor will ever exist. Before it was cancelled & the The Amazing Spider-Man reboot happened, the villains were reportedly going to be either the Vulture or the Lizard.
The first appearance of Carnage (Issue 361) was after Spider-Man had faked his death and Venom, thinking he'd won, retreated to an island to live in peace. With Carnage around Spider-Man had to drop this act and ask Venom for help. Venom has never actually killed Spider-Man.