Continuity mistake: When the two Ninja robots fight, the robot on the left loses his head before the blade strikes.
Revealing mistake: When the boys' rival team challenges them, all the boys throw their gloves down, except Yeah-Yeah. When they all go to pick them back up, Yeah-Yeah has to pretend to pick it up.
Continuity mistake: When Wednesday and Pugsley are playing with the guillotine, Wednesday has a scroll in her hands, which she then rolls up. The shot changes and you can still see the rolled up scroll in her hands. However, the shot then changes again and you can now see Wednesday rolling up the already rolled up scroll.
Continuity mistake: Kimble dyes his hair very dark to escape detection and dyed hair fades over time. For the rest of the movie his hair noticeably goes from darker shades to lighter shades and back again showing that the scenes were shot non-sequentially on different days with a fair amount of time in between.
Factual error: When Jean-Claude is chased by the helicopter in the woods alongside the river, the man in the helicopter fires a MP5 machinegun, but it causes huge explosions, this is impossible, it's not a grenade launcher!
Audio problem: When Miss Orchid is making dinner for Wong Kei-Ying, she turns to him and tells him about a special chili that is made. When she turns back to her cooking, she tells him how hot it is but her mouth doesn't move.
Revealing mistake: At the end of the decisive game, the bad guy hits a deep foul ball. During that hit, they show the ball against a black background. If you look very closely at the bottom of the screen, you can see a hand throwing the ball.
Revealing mistake: In one of Pickett's charge scene the bayonets are obviously rubber.
Other mistake: In the scene at the beginning where Phil eats Jason's Heart, you'll notice that he screams like a monster for a bit. Don't you think that the two security guards would easily hear the screaming and intervene, being that they're in the very next room? (00:13:40)
Continuity mistake: In the locker room, after Dex's death, TJ punches Franz. Karl comes into the locker room and tells TJ to go home. However, a few seconds before the punch we see Karl come into the room point at Franz and say something. You can't hear it because the audio of his line was deleted.
Continuity mistake: When Joe and his wife are about to have dinner, he takes the salad bowls into the dining room and sets them on the corner of the table. He returns to the kitchen for a second and then when he enters the dining room again the bowls are on their plates. (00:30:20)