Continuity mistake: When Justin is disguised with the dread locks, one of the body guards gets into a fight with him. Justin is punched hard in the face in slow motion, the impact of the fist shown to hit below Justin's cheek on his jaw. Yet the next day Justin has a huge red mark above his cheek on his temple.
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.
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.
Plot hole: Once Time Trapper has been stopped by Dawnstar and the time vortex in the sky stops sucking things up, everything in the air just hovers unmoving completely. Except for the people. Somehow Batman and Robin and Superman are able to move around just fine in the same time and gravity frozen place, Robin even jumps from hovering rock to rock without them moving. In fact, as soon as the sucking stops, the tree that Karate Kid is hanging onto stops moving and does not fall, but gravity somehow instantly affects Karate Kid and he almost falls off the tree and has to catch on again. It makes no sense at all for the objects to be affected and stand still and the heroes to not be.
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.
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)
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: 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.
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.
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.
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: In the scene where James and Ben are interrogating Jay at the pawn shop, watch Jay's shirt. It changes from green to black.
Other mistake: After the longest introduction ever, a text crawl (in English in the original version too) details the event leading to the titular fight club. It says that the city fell "A PART" and the institution "IS COLLAPSED." Also, it warns us; "cannibalistic zombies are malformed." (00:59:30)
Character mistake: Near the start, there's a misspelling of the word "Victim" in the newspaper heading "Police expect Beadie to mail latest victim's ID." Read by the man at the bar who is smoking a cigarette. (00:02:14)
Plot hole: Tom told I.D. Halden, "My grandmother passed a few years ago and we inherited the family house." If there was a mortgage, who was paying it for a couple years? And if the house was inherited, there would not be a landlord, they would not be paying "rent", and owners do not get served with an eviction notice. (There was no mention of a legitimate reason, such as unpaid taxes.) There's a failure to discern home ownership (with a mortgage) from renting a house (which is not "inherited").
Suggested correction: It seems to be that it is about two different houses, the rented one they already live in, and the inherited one which is renovated.
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)
Visible crew/equipment: Lighting equipment is seen on Trevor's sunglasses just as he finishes speaking in his Mandarin voice. (00:03:30)
Factual error: In the opening heist, the gang of thieves wants to steal "The Medal of Zeus." A plate at the museum explains that in Ancient Greece, Olympic champions were awarded olive wreaths, up to the 88th Olympics in 424 BC, when a golden medal was given to the victor for the first time. This last bit about gold medals is just made up by the movie. But it also gets the timeline wrong; the 88th Olympics were in 428 BC. 424 BC is when the 89th games took place. (00:03:30)
Factual error: When the high-ups at the Pentagon are looking at the profiles of the terrorists, Ulrika's profile contains a minor spelling mistake ("Americas" instead of the possessive form), but the fun is in her henchman's file. The guy is named "Grigori Babishkova", which is laughable since "-ova" is the female suffix for Slavic last names, he should be "Babishkov." The Nationality field lists him as being "Russian/Caucasian." Caucasian is not a 'nationality'. (00:05:05)