Continuity mistake: The ninja suits up during the opening credits; he reaches inside the weapon stash with his left hand to pick the shurikens, but in the following shot he draws back his right hand. (00:02:40)
Continuity mistake: When the first victim of the ninja arrives at the designated spot for the ambush, he stops the golf cart and in a long shot he reaches for his club. In the closer angle the girl on the cart is in a pose inconsistent with what previously shown, and moments later he asks the bodyguards to help him search the ball, holding the club in a pose that changes at the cut. (00:03:30)
Continuity mistake: Throughout the whole first fight scene the natural light is obviously different between shots. It is already noticeable at the very beginning when the golfer stands by the cart with much more sun on him in close-ups, but also even more obvious when the ninja downs the first opponent that falls in the shade but is lying fully in the sun as his partner assaults the not-so-elusive killer. (00:03:30)
Continuity mistake: At the start of the film, Hanjuro intimidates a bodyguard by crushing a golf ball with his hand. In the initial shot, his palm faces outward. In the next shot, his palm faces inward. (00:03:55)
Continuity mistake: When the ninja shows his super-strength by lifting the golf cart, his left-hand keeps changing position at the back of the vehicle. (00:04:40)
Continuity mistake: Hanjuro slashes a woman on the arm during the opening fight scene. In the close-up, she somehow got a wound on her shoulder that wasn't there before. (00:04:55)
Continuity mistake: The guards of the golf course arrive to the crime scene and approach the corpse. One of them grabs his radio and calls the cops. He's by the corpse of the attractive partner of the main victim; look closely and, without wanting to paint any intent in his action, he ends up with a handful of the actress' bare thigh. In the next shot he's talking on the radio with a firm grip on a more sensible limb; her arm. (00:05:25)
Continuity mistake: After failing to outrun the patrol car on the dirt road (without attempting to lose it in the tree or anything), the ninja turns around and jumps over it. The younger cop in the passenger seat raises his hand and sticks it out of the window; it's there in two shots, and not in the close-up. (00:06:45)
Continuity mistake: When the cops try to kill the ninja blasting through the patrol car roof with the shotgun, the officer's hands swap position between shots. (00:06:50)
Continuity mistake: The police car that crashes into the lake has a perfectly intact roof; its roof was previously shot through, stabbed and punched through. (00:07:20)
Continuity mistake: When the second cop on a motorcycle falls into the lake, the stuntman deserves good cards from the judges for his dive, but in an earlier shot the ninja had already knocked him off the bike, into the dirt. (00:07:25)
Continuity mistake: During the opening fight scene, the evil ninja hangs onto the left side of a helicopter and uses his left foot to throw a shuriken at the pilot. The shuriken somehow hits the pilot on the right side of his face rather than the left. (00:09:15)
Continuity mistake: In the sequence where Hanjuro crashes the helicopter, the pilot disappears and reappears at random. (00:09:15)
Suggested correction: Actually no; he's still there even in the camera angle the second screenshot is from; the knee of the policeman that is fighting Hanjuro covers his head, and then the seat makes it impossible to see him again. You may have to slo-mo to spot it, but he's visible at the beginning of the shot.
Continuity mistake: The ninja kills the idiotic policeman who went in really close to check out the reed in the pond, and then runs away. He is as you'd expect completely soaked in water, but at the next cut he's totally dry. (00:10:10)
Continuity mistake: After chilling in the pond a while, the ninja resumes killing cops left and right. He does not hit one with his katana (but he dies anyway), then he turns around to throw a shuriken at another; this new guy before the camera cuts away is simply raising his empty hands to die, but in close-up he's being more menacing, since he's aiming the gun. (00:10:25)
Continuity mistake: When the cops surround the black ninja 'mortally' wounded and still find a way to get killed, the dangerous ninja is in full sunlight in the first angle, then he's in the shade. (00:10:45)
Continuity mistake: When the Black Ninja in Green seemingly dies (first time of many), the extras are in wildly different positions between shots. Just as an example, in the second shot there's suddenly one dude on one knee on the hood of the car that wasn't there before. (00:11:15)
Continuity mistake: The Black Ninja throws the smoke bomb and vanishes. The cops witness the scene in disbelief. The fat and balding one, called Case, removes his glasses and hat with a single movement. He's still wearing them in the wider angle, though. (00:12:05)
Continuity mistake: The first time we meet Christie, she is climbing a telephone pole for her job. She secures the position, and we get close-ups of the actress. She then begins her work using the box that appeared in front of her during those close-ups, because there was no such box in the first view of the pole. (00:13:20)
Continuity mistake: When Christie's friend checks out the katana, she is suddenly leaning with her right arm against the railing at the cut. (00:20:20)
