Visible crew/equipment: When Clarence Boddicker (Kurtwood Smith) is killed by Murphy (Peter Weller), Boddicker falls into the steel mill's water, blood spewing from his neck. Sharp eyes are required here to see that there is someone standing against the wall in the background... (01:32:40)
Revealing mistake: In the shot where Dick Jones is falling from the top of the OCP building, both of his arms appear to be about a foot longer than they should be. (01:36:30)
Visible crew/equipment: When Clarence is racing away from Lewis near the end of the movie, the camera zooms in on Clarence driving the car and the camera men and camera truck are visible in the reflection of the car. (01:29:35)
Continuity mistake: When Robocop looks up his old address, his house number is the 500's on Primrose Street, but when he drives by the sign on his street it says he is in the 3000's section. (00:54:15)
Continuity mistake: When Robocop is at OCP trying to save "the old man," Jones is wearing a black suit while he is holding him hostage. After he releases him (as Robocop shoots him) the suit is grey, then turns black again as he crashes through the window and falls to his death. (01:35:30)
Continuity mistake: When the bearded man is robbing the convenience store, he demands that the owner opens the safe. Look at the Lite cans on the safe. When seen from the right, there are four cans. When the owner kneels down to try and open it, there are now three. When we cut back to a view from the right there are again four. Finally when the robber is shooting at Robocop there are only two. (00:33:20)
Continuity mistake: Right after Sergeant Reed has removed Fredrickson's sign from the locker and says "Murphy, front and center," you see two men standing behind Murphy. When it cuts, only one of the men are behind him. (00:04:55)
Continuity mistake: In the beginning when the tracking device is shown, the dot is red and the building outlines are orange. When Dick Jones is holding it later, the dot is white and the outlines are red. (00:30:20 - 01:08:05)
Continuity mistake: The bullet holes on Robocop in the convenience store appear /disappear between shots. (00:35:05)
Revealing mistake: When Robocop is completed and they are going over his gear, they show a tracker that shows his location at all times. The tracking unit is obviously fake; the street layout is a decal and the "blip" that is Robocop is in a fixed position. (00:30:20)
Factual error: The film takes place in Detroit, but it is glaringly obvious that it was shot in Dallas. First of all, in the early scene where Murphy chases Boddicker's gang on the highway, Reunion Tower, one of Dallas's most famous landmarks, is visible in the background. Much of Dallas's skyline is also visible in the final scene where Robocop confronts Dick Jones in the OCP boardroom. (00:15:15)
Continuity mistake: When the guy holding the mayor hostage gets thrown out of the window, we see the only two TV cameras near the location follow his fall down to the ground. A few seconds later on the news though, the footage is the same shot we saw in the film, staying focused on the window. (00:39:55)
Continuity mistake: When Bob is reaching for the grenade on the table, we can see that there is cocaine all over the table, when the camera view changes to Dick's face on the TV and back again to the table, it's clean. (00:58:48)
Continuity mistake: When the ED-209 kills the businessman, his chest and tummy are covered in blood. However, when he falls backwards, the shirt is clean except for a small spot with blood.
Continuity mistake: The first day together, Murphy and Lewis are in the car exiting the police station. When the angle changes to a back view of the car, Lewis is gone. (00:06:30)
Answer: When Bob Morton is told by a tech that one of Murphy's arm was saved, Bob stated that he wants total body prosthesis. Meaning Robocop's entire body was synthetic. None of his actual body was used. The only thing that was used was Murphy's actual face.
Also, his human brain, and possibly his spine, where OCP could wire him into the suit.
Movie Nut