Visible crew/equipment: When Dr. Faxx is programming the new directives into RoboCop, the camera pans around RoboCop's body. You can see the reflections of a camera and a crew member on RoboCop's helmet. (00:47:55)
Continuity mistake: When RoboCop and Lewis go to deal with the baseball kids robbing the electrical store, they are shot at and Lewis spins the car round. We cut to a close up of the car and see Lewis get out, meanwhile RoboCop opens his door and puts his hand on top of the car, supposedly to get out. A few moments later he is still siting in the car, arms on his legs. So why did he put his hand up? (00:50:12)
Revealing mistake: Just before RoboCop gets out of the car to walk towards the baseball coach, Lewis shoots at the coach and he jumps back. Watch carefully. Whilst jumping, his hat comes off slightly and you can see the make-up for the hole in his head, which he doesn't receive for a few seconds after this. Seen best in Slow motion on the DVD. (00:50:31)
Continuity mistake: When RoboCop gets out of his car in the scene where the baseball coach is firing at him, the building behind him is reflecting the sun and looks very bright. Less than 2 seconds later we see RoboCop walking towards the electrical shop and the building is very dull looking. Where did the sun go? (00:50:36)
Continuity mistake: Watch the lights on the police car when RoboCop and Lewis are walking towards the baseball coach. They are on, but just after they start walking, they get turned off. After the baseball coach has been shot, they are on again. (00:50:43)
Visible crew/equipment: Watch very carefully when RoboCop shoots the man in the yellow shirt in the factory scene. The man falls down the stairs and just as he reaches the bottom, a pair of hands come out from the bottom of the screen to break his fall. (01:00:02)
Continuity mistake: RoboCop is being scraped up against a wall while hanging onto Cain's van. When he comes away from the wall there are no scrape marks on his back. (01:01:58)
Continuity mistake: When all the cops go into the nuke factory and one cop is hit in the leg, the other cop puts his hand over a bar and yells "give me your hand." As he pulls him, his hand is now under the bar, even though he never let go of the cop's hand. (01:02:00)
Continuity mistake: When RoboCop is being scraped up against the wall creating a shower of sparks, we cut to views of Cain. In one of these shots of Cain, the background suddenly changes - the wall he's scraping up against is nowhere to be seen and the sparks vanish. In the other shots of Cain, the background is correct. For some reason, a shot was taken from another part in the sequence and added in here, creating an odd continuity gaffe in the background. (01:02:02)
Suggested correction: This is not correct. When they show the interior shots, you can see the red brick wall out of the window.
This correction is untrue. You can find the scene on YouTube (look up the video "Robocop 2 (6/11) Movie Clip - Demolition Ride" and pay attention from about 0:55 - 0:58), and the background is definitely totally different - different type of brick, graffiti is missing, there's no sparks and it's in the distance. The original mistake is correct.
Continuity mistake: After RoboCop slams into the pole, watch the ground at his feet carefully, you can see that one of his calf pistons have broken off. Just a few moments later when he is on the motorbike, both calf pistons are intact. (01:02:21)
Continuity mistake: RoboCop overtakes Cain on his motorbike, and we see a shot from inside Cain's van. We can see that both of them are very close to the end of the street, and there are two small buildings on the right side of them. The width of those buildings are all the space that stands between them. RoboCop then builds up speed to about 60mph and charges towards Cain, passing several buildings on his right. There is no way RoboCop could have travelled that fast in that short a space, and there is no way he could have passed more than 2 buildings. (01:02:54)
Continuity mistake: When RoboCain kills the chubby man with a moustache, his jacket falls down in the back shots, but it's perfectly fit in the front angle. When he finally collapses, it's falling down again. (01:19:50)
Continuity mistake: When RoboCop 2 is shooting everyone he shoots a news reporter and camera man on top of a van. When we see them just before they get shot, the reporter is talking into his microphone, but his mouth isn't moving. (01:29:23)
Revealing mistake: When Lewis is shooting at RoboCop 2 she quickly runs as RoboCop 2 aims for her. He shoots at the car behind her, and if you look closely at the boot lid, you can see slight dents made by the crew so that they can make sparks come out of the boot when it is shot. (01:39:17)
Revealing mistake: Just before the reporter and cameraman are killed on top of the van, a woman is running away from the scene and is shot in the legs, and she falls to the ground. A man comes to pick her up and he gets shot in the back. If you look carefully, you can see the marks that the vest he is wearing make on his back, (which explodes under his clothes making it look like he was shot). (01:39:25)
Continuity mistake: A man fires a rocket at a police car driven by Robocop, but when the car overturns and it's shot at, one can see it's empty. A moment later, Robocop opens the door and appears out of nowhere.
Continuity mistake: At the start of the movie when the gun store is being robbed, one of them fires a portable rocket launcher at the police car, causing it to roll over and spin. As it comes to a stop just outside the store, it's visible that the driver's side window has been blown out, and the vehicle interior is visible, however when the same guy prepares to fire the bazooka to finish it off, the window has returned and is completely intact.
Continuity mistake: When the mayor turns up at the steelworks to speak to the boy about getting money, the limo has square headlights and white-walled tires. Cut to a few scenes later when Robocop 2 has already turned the limo over, the headlights are now circular and the tires are all black.
Visible crew/equipment: When Robocop visits Cain's hideout and sends his car in as a decoy, after he returns to the car, watch the driving shot closely. A wire has magically strung itself across the entrance and attached itself to the back of the car - it wasn't visible from an earlier shot. As the car drives forward it stretches the horizontal wire, and just as a tiny amount of pressure is exerted, the car explodes. Yeah, it's technically a mistake, but I think it's more worth checking out just to see how those tricky effects are achieved.
Audio problem: Near the end, just as Robocop2 has locked onto Robocop, Lewis holds up a container of nuke, she starts to say something, but the editor decided to cut that bit out and move on.