In Dawn of the Dead, we see the zombies in the shopping centre pushing trolleys and things like that. Repeating activities mindlessly that they once did in life.
In Day of the Dead we meet a zombie called Bub, who the doctor in the complex has shown has a very rudimentary intelligence that he has managed to bring back to Bub via treating him like a human being and coaxing old traits back to him via audio cues (music, etc), social cues (talking to him, treating him like he's a living human) and visual cues (clothing, etc). Bub recognises individual people and actually develops a friendship with Dr. Logan. When Captain Rhodes kills Dr. Logan, Bub knows what happened and actually shoots Captain Rhodes with his own gun, letting out an anguished scream,
showing he is experiencing basic emotions and sociability.
In Land of the Dead we meet Big Daddy, who has developed like Bub, but is even more intelligent, with problem solving ability and demonstrating his ability to communicate with other zombies on a basic level, and at some points chooses to leave humans alone when possible, sparing them and moving on elsewhere.
Warm Bodies begins some time after Land of the Dead, presumably a few decades, as each movie in the first 4 Dead films is generally a 10-20 years or so after the last one. In that time we meet a group of zombies that has developed just like Bub did and just like Big Daddy's group did. Just like Bub and Big Daddy's group, R and his buddies exhibit basic communication, and just like Big Daddy, they show that they do actually think on some level, and are able to solve problems and perform basic tasks. Also just like Bub, we find that with social conditioning, zombies are able to reclaim some of their humanity - although Dr. Logan & Bob's research was cut short by Captain Rhodes and his crazed dictatorship and rejection of research, eventually killing Dr. Logan
However, when Julie comes along, we see what could have happened with Bub had Logan not been interrupted by Rhodes. Julie is eventually willing to give R a chance after plenty of adjustment, and finds that the zombies haven't lost all of their humanity, but whatever caused them to become zombies merely took it away from them, as opposed to the bonies who have gone far too long without any socialising or exposure to any kind humanity - they're just too far gone. They've decayed and their bodies actually become too rotted and decayed. We see examples of these 'bonies' in the Dead series - they're the ones that do not appear to have any humanity left, as opposed to the plethora of ones that still push trolleys in the shops, beat on tambourines, or other human-like activities - often they have the same hyper emaciated look, too.
So the subplot throughout the Dead series about zombies having some of their humanity left, and being able to reclaim it and demonstrate it to some degree is extended and brought to its conclusion, with R and some of the other zombies actually becoming cured
. Let's also not forget that the cause of the zombies was never revealed in the Dead series so it is possible that in both the zombies are still alive for a significant period of time, resulting in bonies when they bodies actually finally die. This also explains why we sometimes see lingering shots of some zombies eating brains in the Dead series - it's because, as R tells us, they are able to experience brief episodes of the memories contained in the brains they're eating, something that makes them feel just a little more human for a brief moment.
There is a semi official parody called Saikon No Dead, or Recent News on the Dead, discussing some zombies that gained the ability of thought, and started organizing themselves.
In the film, the Big Bad
boney is killed in the random masses of boneys that were cut down
As opposed to in the book, it was hiding out among the others (safety in numbers), so its death wasn't really noticed - but that's when the boneys stopped actively attacking.
R's real name is Rob.
Because Rob Zombie.
Alternatilvey, his full name will become "Just R"
Marked with the initials: J.R.
R's real name is Romeo.
Romeo and Juliet. R and Julie.
M is R's father
He's roughly 20 years older, and it explains why they maintained a close friendship through grunting and almost sentences. They probably both don't know it.
- They do seem to have something of a father-son relationship at times, like when R meets him after Julie goes back to the city.
How Zombies work
- Firstly, there is a noticeable lack of Corpses or Skeletons that are missing limbs, Boneys are much faster and stronger than they should be, and zombies can all move their limbs despite not having flowing blood. So, the zombie virus, which is implied in the book to be somewhat supernatural, strengthens the sinew and muscle around the bones, along with the bones themselves, and gives enough energy to the muscles to allow them to move.
- Secondly, Boneys move faster than corpses, so most of the corpses muscles, mostly the ones not right around the bones, are not given this power, and are essentially dead. Bonies also move faster than humans, so there is a lot of energy in their muscles thanks to flesh and the virus.
- Thirdly, Corpses seem to have some sentience but still act like Romero zombies, while Boneys are pure animals. So, the virus creates a powerful instinct that acts like a second brain inside the corpses, but it doesn't remove their sentience until they become Boneys.