Factual error: In the rat revival scene, Dr. Terra Wade, an electrophysiologist, demands that the other scientist, Dr. Bell increase the current, going as high as 200 joules. However, current is measured in amperes (amps), joules is a unit of energy.
Continuity mistake: Federov is pointing a Wather at a kneeling Mira. In the next shot his gun switches to a Sig-Sauer and then back to a Walther. (01:12:55)
Plot hole: Towards the end the Rich Purgers call for reinforcements, and Shane, Leo, Eva and Cali are hiding behind a wall. A guy somehow opens a door in front of them (without being seen by the three facing him), exposes himself and shoots only Shane, numerous times, to cause his death. He should have been spotted by the people looking in his direction. Also, if he was that well hidden he could have simply sprayed the entire group. He unloaded 5 or 6 shots to Shane's chest...when he could have taken them all out.
Continuity mistake: When the Dark Aster enters the atmosphere at the end of the film, its wings untwist as it descends, in most of the scenes afterwards and the hologram the ship's wings are still twisted, then later during the battle they untwist again.
Continuity mistake: When the car with Alice goes over the cliff, and when she then exits, she is wearing shoes. When she awakens and begins climbing (and afterward), she has none.
Continuity mistake: After cutting through Black Manta's gun, Aquaman then slams Manta in the face with his trident and knocks him down. As he is twirling his trident in victory, you can see his belt and its design. But then it cuts to a close up of Aquaman and suddenly his belt changes in design with the bar in the middle disappearing and the black of his pants extending further up onto his orange shirt in the belt area. (00:03:50)
Continuity mistake: Hercules and Tarak are sitting together talking and Hercules pulls out the necklace that his lover gave him as he reassures Tarak that he will get them to Greece. In one shot he is looking down at it in his hands, then the next shot his head is suddenly leaning back against Tarak. (00:37:45)
Plot hole: The main plot of the film involves Iris and Olson's mission: Destroying the Mobile Fortress 000. But Iris is a special gynoid. Her primary function is to activate the Mobile Fortress. The antagonist of this film could unleash calamity if he had Iris and the fortress. So, which idiot has sent Iris on this mission? The logical course was to send a demolition team, or better yet, send no-one at all. Anything is better than sending the activation key outside the safety of the Olympus.
Character mistake: When the supply convoy is ambushed, Soto is instructed to get on the .50 caliber. However, the weapon on the gun ring is a .30 caliber M1919 machine gun, not a "Ma Deuce" .50 caliber.
Continuity mistake: Hercules is bitten on his right shoulder by wolves towards the end. As they escape the dungeon the bites can been seen on that shoulder throughout. But as soon as they escape the bites are no longer there.
Character mistake: Nikki lost her insulin kit and needs insulin. Her mother suggests getting her a fruit juice, something sweet. Fruit juice contains a large amount of sugar which raises blood sugar levels very quickly. Therefore, people with diabetes are usually best to avoid drinking fruit juice. Her suggestion is absurd.
Factual error: After Batman hits the Manbats with his sonar batterangs and they go nuts trying to escape the sound, some begin chewing at the glass separating them from the ocean in their desperation. This is in the under workings of an oil rig out in the ocean. Hundreds of pounds of pressure is on that glass. The Manbats chew through the glass, and then the water begins rushing in. All logic and laws of physics dictate that the Manbats would be pushed back, down into the oil rig further as water rushes in. However, as the water begins pouring in, 3 Manbats are somehow pushed out of the hole into the water, and are sitting still, long enough for a shark to grab one. Even if they did somehow manage to get out like that despite physics, the water rushing in the hole would have caused a vacuum and sucked them right back in. Yet they remain perfectly still in the water, only a couple feet or so away from the hole they just made.
Continuity mistake: In the scene where James and Ben are interrogating Jay at the pawn shop, watch Jay's shirt. It changes from green to black.
Continuity mistake: Near the end, Thomas is saddling a horse. He throws the stirrup over the saddle so he can cinch the girth. But he is interrupted by the presence of the witch he loves. Somehow, the horse has had its girth cinched and the stirrup is in its proper place, all without Thomas' help.
Revealing mistake: In the news reel detailing the Kohinoor theft, a few headlines appear, and at least one persists on screen long enough to easily spot the inconsistency between headline and article (filler text presenting a new local magazine from the London district of Lambeth). (00:09:00)
Factual error: The three panzers that ambushed the Hellcats are supposed to be Mk. III's with the 50mm gun, but they only had 5 bogie wheels, instead of 6, and no driver or radio operator's hatches.
Continuity mistake: When Nick is instructed to leave hotel room #700 Chord verbally tells him to "go outside and turn right." but the on-screen arrow points left and we see Nick turn left. (00:29:39)
Factual error: A scene shows a 1980's Ford Crown Victoria with New Jersey license plates. They start with QQ which means it's registered as a historic vehicle which means it has to be at least 25 years old. The film is set in 1999.
Revealing mistake: As Glenn, Blake and Monica are being surrounded by zombies, as Monica asks "Fucking hell, how many more of these are there?", in the background you can see a zombie sitting astride his victim, flailing away with a hammer or hatchet. It is obvious that he is just swinging his arm back and forth, without connecting with anything. It looks as if he is dusting, not slaying someone. (01:23:50)
Factual error: When the guy is talking to him on the phone and the Russian smashes it on the floor, the phone smashes and the battery comes out but the guy other end can still hear him. (01:04:00)