@Myoozik
The tone changes quite a bit.
The first one is more drama than action,with Vietnam Vet Rambo being harassed by cops and freaking out. He escapes and is pursued but the cops underestimate his abilities.
In the end we learn a bit of his traumatic experience.
The second film is very much a straight forward action movie with all the cliches that entails. It’s watchable,but it’s not something I would have watched otherwise. The third is another action movie,the effects are great,but the plot is standard action,which is fine,but I’m not a fan.
The cartoon series is clunky,slow and cheesy in a bad way. The music is about the only salvageable thing from that mess.
Rambo 4,is another action movie,but it’s a far stronger movie to me than the other sequels. The second and third portrayed war in a slightly exaggerated cartoony way,while this one is grounded and takes place in nonfictional Burma.(setting,the film was shot in Thailand I think) This is a pretty violent flick. It doesn’t shy away from gruesome imagery that wouldn’t be out of place in a war documentary.The villain is despicable in a way that you can’t wait for Rambo to give him his comeuppance.(Intrestingly,the villain was played by a real life Burmese Freedom fighter)
Finally is Last Blood,a divisive flick for fans. I enjoyed it,but the intensity of it can be too much for most people. Rambo is back in the US with his family,his niece is getting into trouble with some Mexican gangsters,and the finale is basically deadly Home Alone in underground tunnels Rambo made.