Venom was a very silly movie. Worse still the trailers showed a lot more of the movie (all the action scenes with the exception of the final battle were shown in the trailers/tv spots) than I expected.
The movie was actually a lot more of an action comedy and the symbiote was a pretty funny character (almost entirely comedic). Heck, the movie had scenes of slapstick and gross out humor, it wen't full comedy at some points.
As per the characters, they aren't really like the ones in the comics. This version of Eddie Brock is a LOT more conscientious than the one in the comics and the symbiote is a lot funnier than in the comics. The movie was a LOT like the first Ghost Rider from Tom Hardy's hilariously bizarre performance (very Nicholas Cage like) to the PG-13 horror violence. People say the movie was filmed to get an R-rating but i don't think so, the look and feel of the movie seems very PG.
It's definitely a pre-MCU, pre-Dark Knight kind of superhero movie but it wasn't the train wreck it's been made out to be (folks comparing it to Catwoman are insane!). Overall, i'd give it a 6.5/10.