Continuity mistake: When Captain Bollin is questioning Shaft in his office, his hand position between shots is not always consistent. Best example when he asks Shaft about Mascola: he is leaning with his left hand on the top of the file cabinet, but he's shown rubbing his hands together in the following shot. (00:29:40)
Other mistake: The opening credits misspell the name of production supervisor Peter Sczygiol ('Sceygiol') and firearms technician Gino Vagniluca ('Vigniluca').
Revealing mistake: When Itto is battling the group of male ninja in the forest there is a moment when two ninjas throw chains towards Itto and in the close-up shot of the two chains flying at Itto the wires attached to the ends, guiding them, are visible. (00:33:55)
Continuity mistake: During the opening credits, Peter Boyle is seen loading luggage into a red Ford convertible with a rear license plate reading 677 EIY. When he parks in front of the Community Legal Services office, the car's front license plate reads 185 ENV. A few moments later, when he goes to meet Robert Redford, the front plate reads 772 DYD.
Visible crew/equipment: Near the beginning of the film, when the whole party is moving through the swamp, there is a moment when the carriage containing the two women almost topples over. If you watch the right side of the screen when this happens you can see a hand come into frame to help steady the carriage. The hand is white and sleeveless (at least to near the wrist) and obviously doesn't belong to any of the soldier's or slave's. On the Blu-Ray commentary track for the film, Werner Herzog states that this is his hand. (00:09:10)
Revealing mistake: At the beginning, when the woman in the flotation seat is paddling backwards, you can see a fishing line attached to the back of seat that is being pulled to help her move backwards.
Other mistake: It makes no sense that the pimp would die from having the tip of his tongue bitten off. (00:23:35)
Continuity mistake: When KC Carr visits her mother, daughter, and son she's shown leaving in a taxi. Later she's shown driving her own car. That car seems to vanish when she joins another derby team who travels by bus. Surely the other derby teams she was on had buses.
Revealing mistake: At the beginning of the film O-Yuki is fighting the men in the forest and kills them one by one. When she kills the last one there is a close-up shot of her dagger entering his rib area and blood sprays out. However, if you pay close attention you can see the blood sprays out of his sleeve (presumably there is a device in there), not his torso. (00:01:18)
Revealing mistake: When Anguirus makes his sacrificial charge against Gigan, the hand that is moving the Anguirus costume can be seen holding it.
Continuity mistake: When Louise is in the study, sunlight is coming through the manor house windows, even though it's supposed to be nighttime.
Continuity mistake: Pickett Smith has his shirt sleeves rolled up at the movie's beginning, then they're rolled down and buttoned then rolled back up before his canoe gets knocked over.
Continuity mistake: When Abel rams the sheriff's car, he is driving a 1966 Chevrolet. He leaves and ends up at the veterinary clinic, where the doctor injects him with a poison. During the following chase, Abel's car becomes a 1967 Chevrolet, then reverts back to the '66 Chevy.
Other mistake: The movie opens with a quote from Lewis Carroll, mistakenly credited as Carrol with just one L.
Continuity mistake: While Prince Mamuwalde struggles with Count Dracula's goons, some candles are knocked off a candelabra, but the next shot shows the candelabra with the full complement of candles it had before the fight.
Revealing mistake: The protagonist jumps from a bridge and boards the train to try to save the Professor. When he is walking on the top of the carriages, look at the treetops in the background; the train is stationary. (00:12:00)