In the film, Tom takes off his sunglasses twice after he and Capt. Kim stop on the road to look for the giant ape,
In the film, when the giant ape appears at the set of the martial arts film, the entire film crew is seen running away from their equipment to where the actors are standing. A brief shot of the ape is shown, and when it cuts back to the cast and crew, the crew are still standing by their equipment before running back over to the actors again.
In the film, if the giant ape is 36 feet tall, it should not tower over 10 or 20 story buildings. Other scale problems in it include the relative sizes of a python and a great white shark, which would have to be gigantic.
In the film, the giant ape throws a rock at a tank during the final battle. The rock lands near the tank without touching it, but the tank still explodes.
During the many shots in the film of supposedly terrified, fleeing South Korean extras, several people are often seen laughing or smiling.
In some shots in the film, a hole in the ape suit reveals the monster actor's T-shirt underneath.
Both the great white shark and the python that the giant ape "fights" in the film were normal-sized in real life, making them appear inexplicably gigantic next to the supposedly 36-foot-tall ape. Despite this, there is never an acknowledgment by any of the film's characters that giant animals other than the ape exist.
In the film, when the giant ape throws the python at the camera for the 3-D effect, the python actually hits the camera, which obviously shifts upon impact.
The film's soundtrack music rarely fades out in it - in fact, it usually comes to an abrupt halt when the scenes change.
In one of the first scenes in the film, two characters driving through Seoul see the South Korean version of the World Trade Center, the "North Gate," and the President's Mansion. The landmarks are several miles apart, in different parts of Seoul. Considering the short span of time and what appears to be a straight route, the characters would not have had time to see all three landmarks.
In the film, the giant ape stands and watches the children on the playground for a very long time before any of them notice him, even though they are running all over the place and someone inevitably must have looked in his direction. When he is finally noticed, he has not even moved.
In the film, not only does the farmer in the village not notice any of the giant ape's footprints until he drives his tractor into one, neither he nor any of the other villagers appear to notice the ape until afterwards - even though he is standing right in front of them and must have just walked through the village a minute ago.
In the film, a group of schoolchildren and their teacher inexplicably appear to break into a closed amusement park to hold class.
In the film, when the giant ape smashes his hand into the house where Marilyn is hiding, she inexplicably runs directly toward the ape's hand instead of away from it.
In the film, while Marilyn is shooting the second scene for her film, the film crew appears to have only one camera. Despite this, the takes of the scene involve her running a great distance, between structures, down stairs, and over a bridge - even though the single camera would have lost sight of her after a few seconds.