Revealing mistake: After the sequence where the cops eagerly arm themselves with batons (at the funeral of two dozen armed with guns), the ninja disposes of a single motorcyclist. As she knocks him off the bike, you can see on the path the dirt marks at the center of the asphalt from previous takes. (01:06:10)
Revealing mistake: Somehow, every ninja in this movie is really bad at being undetected. Sho Kosugi gets caught again by a guard after fighting with the ones outside the morgue, and disposes of him with a roundhouse kick. The stunt is comically bad, because you can see the guard literally throw himself at the wall headbutting it. (00:55:50)
Revealing mistake: At the climax of the exorcism scene, Christie begins spinning at great speed. That's an impressive supernatural feat already, but the real scary part is that to do, so she also transmorphs into a dummy. (00:52:40)
Revealing mistake: During the movie, the ninja crushes with their bare hands a golf ball (in the opening fight) and a billiard ball (in the fight against Case). Both times the ball is replaced by a shell filled with talcum powder. It's especially conspicuous in the case of the cue ball, because the previous 'stunt' involved slicing one in half and the ball looked nothing like the one she 'pulverizes'. (00:04:00 - 00:38:35)
Revealing mistake: As the ninja starts mowing down people left and right before his victim tries to run him over with the horsepower of a little golf cart, you can see his sword is not actually hitting anybody, even when he's supposed to be stabbing and slashing them. (00:04:00)
Revealing mistake: When Sho Kosugi stabs the Zombie Green Black Ninja in the skull, the victim falls down replaced by a dummy. (01:28:25)
Revealing mistake: During the final earthquake, the camera shakes vigorously but not a single blade of grass or leaf moves in the slightest. (01:27:00)
Revealing mistake: During the fight of the monks that happens on the double squared platform, part of spear gets chopped and flies around the set like it's made of the most flimsy material. (01:21:40)
Revealing mistake: Fight with the possessed monks; Sho Kosugi reluctantly kicks the first one, then he has two in front of him; fighting the leftmost one, he hits him with a great kick, but then his backhand is miles away from connecting. (01:21:15)
Revealing mistake: When Christine escapes from the window, she turns into an athletic guy. (01:10:45)
Revealing mistake: In the sequence with the ninja knocking two policemen off their bikes at the funeral, the one on the right goes down (not to dodge, but acting like he's being hit) a second before her foot actually hits. (01:05:40)
Revealing mistake: At the funeral, Ninja Christie shoots two arrows. She prepares to shoot a third, but meanwhile (in the shot where a widow is looking around worried and a man in a light suit pulls her away) another guy just dies for no reason hit by something invisible. (01:05:10)
Revealing mistake: The first time we see the legendary Sho Kosugi properly in action, he knocks out a guard, then he throws a shuriken at another and fights him. He dodges his baton, kicks him, and then you can see clear as day the awkward moment when the stuntman just stops and waits for the follow-up push-kick towards the dumpster. (00:55:20)
Revealing mistake: Christie is fighting the dudes hanging out in the alley of the gym. She knocks down the first two, then she does a weird move with her feet on the third one. The cooperation from the stuntman is blatant there. (00:24:15)
Revealing mistake: Police cars get to the golf course, where the ninja somehow is still hanging out in the open. The footage of the car doing a U turn beginning to chase him is sped-up to Benny Hill levels. (00:06:00)
Revealing mistake: The evil ninja blows a dart inside the barrel of a gun making it explode when the bodyguard fires. Forgetting the fact that the movement is unnatural and patently phony since the film is reversed, the dart also fully 'disappears' inside the gun and yet again when we see the guy about to shoot there's an inch-long of dart sticking out of the gun. (00:04:20)
