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Revealing mistake: A yellow Pontiac GTO gets shot up, then gets blown in half with the rear end landing inside a shop window. If you look at the sideskirt of the car before it gets destroyed, you can see the cut already in the sideskirt where it will split apart. (02:01:20)

GalahadFairlight

Visible crew/equipment: When Sam tries to hand off the All Spark, the chopper is shot down by Starscream. When the chopper wreckage flies over Sam lying on the ground, the black protective gear is visible between Sam's pants and tee shirt. (02:05:45)

Super Grover ★

Continuity mistake: During the final battle, Sam rolls on the pavement and reverses direction as a jet-bot lands and transforms. The next wide shot shows Sam scurrying alongside the passenger-side fender of a black Mercedes sedan as another black car is tumbling over the Mercedes' hood, its doors wide open. This same moment repeats in the next shot, from another angle, but suddenly Sam isn't at the fender of the Mercedes- he has vanished. The angle changes again and the same moment repeats a 3rd time, and Sam is still missing. Then, a closeup shot is looking up past Sam as mayhem rages above, and the black Mercedes he huddles against is suddenly a red car. (02:01:20)

johnrosa

Continuity mistake: When Mikaela looks under Bumblebee's hood, in close-up shots, her tummy is shiny and oily. In other shots, it is completely dry. (00:25:25)

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Continuity mistake: After the Alien Queen is sucked out of the airlock, Ripley climbs back onto the platform and closes the doors. In a shot from above, her left leg has not yet crossed the mouth of the opening. Cut to a closer shot and half her body is already on the platform.

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Continuity mistake: When Mathayus is stabbed with the poison arrow, it goes into the side of his right thigh, but when he removes his bandage after Cassandra has healed him, he checks the front of his left thigh just above his kneecap for the injury. (00:45:05 - 00:48:05)

Continuity mistake: In the end of the film, when Ripley pulls the Alien queen down in to the hatch we can see that the bulb on top of the machine cracks but when they are lying on the hatch the bulb is whole. (02:05:10)

Continuity mistake: Before Frenzy goes to the POTUS mainframe, aboard Air Force One, in the overhead shot of the cabin the seated Secret Service agent holds in both hands the unopened USA Today, with the back's weather page facing out. Next shot, the newspaper is open in his hands. (00:28:10)

Super Grover ★

Visible crew/equipment: During the attack on Hoover Dam, after Simmons rejects Sam's request to be brought to Bumblebee, when Simmons tells Lennox to drop his weapon, in the next overhead wideshot the grey tape marker between Lennox's and Simmons's feet is visible, as well as the tape marker at Secretary Keller's feet. (01:43:15)

Super Grover ★

Continuity mistake: After the fight scene between Mathyus and Balthazar and the tribe celebrating, you see Arpid arm wrestling a woman. In the first shot he is wrestling with his left arm and in the next shot he is wrestling with his right arm and loses. (00:56:15)

Continuity mistake: At Hoover Dam, when the soldiers salute Keller the clock reads 10:00, then as Keller, the soldiers, Maggie and Glen walk away in the background, when Simmons tells Sam that they got off to a bad start the clock reads 11:35, and next shot when Banacheck interrupts it reads 11:43. Also when Simmons talks to Mikaela and Sam the word "Nevada" is gone and it only reads "Time" under the clock. Then when Banacheck says, "Come with me, we'll talk about your car," the word "Nevada" is back under the clock. (01:35:25)

Super Grover ★

Continuity mistake: At Hoover Dam, when Sam tells Banacheck the terms of his cooperation (which include expunging Mikaela's juvenile record), Mikaela's high-gloss lip gloss disappears in her close-up, then reappears. (01:36:00)

Super Grover ★

Continuity mistake: When the SUVs arrive at the Hoover Dam, the lead car pulls up to the curb and the doors open directly in front of the first elevator tower (there are four, which are seen in overhead shots), on its right, with the two Nevada intake towers well ahead of the SUV, on its left. Next close-up, however, as Sam exits the SUV the vehicle is now parked farther up the road, directly in front of the Nevada intake towers to its left and closer to the second elevator tower. Note the yellow pedestrian walkway markings (leading to the Nevada intake towers) the SUV is parked on in the second shot. (01:34:25)

Super Grover ★

Continuity mistake: When Bumblebee's legs are destroyed, as Sam leans over in front of him and asks if he's alright, Sam wears blue patterned boxers, but when Lennox runs up to Sam, who is standing on the tow truck helping Mikaela hoist Bumblebee, Sam's boxers are grey (as seen between his white tee and jeans). Then, when Sam is on the roof running, after the chopper is hit, his boxers are blue patterned. (01:53:45 - 01:57:10)

Super Grover ★

Continuity mistake: In the shot were Ripley is driving the crew away from the aliens, note the big dent in the vehicle. Then in another shot when they finally get outside, there's a shot from the side and the dent is gone. (01:19:15)

Trivia: There is a red circular logo on the dropship. Although not visible in the film, it says 'Bug Stomper: We endanger species', as revealed in the extra features.

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Other mistake: In the scene where Mathayus happens upon the hide out of Balthazar and his people and are confronting one another, Balthazar's necklaces change from being messily arranged to neatly graduated in frame to frame. Surely he wouldn't have been rearranging the necklaces while confronting the Arcadian? (00:53:20)

Continuity mistake: As we are hearing Prime explaining, "They're a young species, they have much to learn," we see S-Seven's SUVs pull up to the curb at Hoover Dam and the doors open, right beside the vertical guardrail posts with the horizontal beams. In the next close-up, all of the horizontal beams have vanished. (01:34:25)

Super Grover ★

Revealing mistake: When Mathayas is chasing the kid who stole his rupees, he crawls into a hole that's just big enough for him to fit through. But when Mathayas crawls in, the hole has grown - he should have only been able to fit on his stomach, but he goes through on his knees. (00:25:15)

Continuity mistake: At the very end, when Ripley is closing the lid of Hicks's sleeping capsule, we see a shot of him and the bandage almost covers his left eye. In the close-up shot of the lid closing, the bandage is further up on his forehead.

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