Corrected entry: In the big fight scene at the end of the movie against The Brotherhood, Storm fights Callisto (Speed/mutant-detector) and kills her via electricity which comes out of her hands. Since Storm's power is to control weather, and weather control and electric shock are two very different things, she shouldn't be able to do this (in the first movie she had to summon lightning down from the sky to use against Toad).
Correction: There is no error, the lightning simply never comes out of her hands. All the lightning strikes comes from the sky. If you watch the scene you see she just uses her hands to point or direct the lightning towards Callisto, but the lightning comes from behind her.
Corrected entry: Near the beginning when the boy is cutting his wings, his hand is reaching behind his back. During different shots he's reaching behind him with different hands.
Correction: There is no mistake. The camera shot simply changes from filming Angel directly to filming the mirror reflection, and there is plenty of time for Angel to turn to face the mirror. You can tell the second shot is a reflection because the position of his mole switches sides. The mole is always opposite of the hand/arm Angel uses.
Corrected entry: In the recently released prequel, X-Men: First Class, Mystique's "normal" form has blonde hair. In this movie, when she is shown in her human form, she has dark hair.
Correction: You mean Mystique can't change her hair color when she is in human (prequel) form? In the X-Men: First Class prequel she struggled with people accepting her "looks" so when making herself look "normal" she clearly makes her hair blonde too.
Corrected entry: We see that Pyro is able to create fire to blow up flying cars. However, in X2, he says that he cannot create fire. He only controls it, which is why he always has his lighter.
Correction: Earlier in the movie we get to see how he has rigged up a small device to his forearm, that functions as a lighter, producing a small flame for him to work with.
Corrected entry: The protruding rock that Cyclops stands on when he shoots his optical beams into Alkali Lake was actually a fiberglass prop affixed onto the existing rocks by production designer Ed Verreaux.
Correction: Using false terrain is a very common filmmaking practice. This isn't trivia.
Corrected entry: In the scene where Juggernaut is attempting to catch Kitty Pride and Leech, he runs and ends up hitting his head on the wall and knocking himself unconscious (due to the fact that Leech has the ability to nullify other mutants' powers). However, Juggernaut is not actually a mutant, as his power is derived from the suit he wears (an alien suit). Therefore, in reality he would have still bashed through the wall and Leech's power would have had no effect on him at all.
Correction: Incorrect. In the film, Juggernaut is a mutant and thus Leech can affect him. The fact that his origin is different in the comics (it's nothing like what you suggest, by the way) is irrelevant.
Corrected entry: In the opening scene at Jean Grey's house, we see the water from the hose going up, but neither Magneto nor Xavier has the power to do this: Magneto can control metal and Xavier is a telepath.
Correction: Neither Xavier nor Magneto are doing anything in this scene, it's all Jean Grey. And SHE has no problem using telekinesis.
Corrected entry: In the opening scene when Xavier uses his telekinetic ability to lift the cars in the street outside the Grey house, Magneto says "Oh Charles, I like that one!", a reference to the fact in the first film he used the same trick outside the train station.
Correction: Nope, totally wrong. He says "I like THIS one", referring to Jean, the one's who's actually lifting the cars, not to what she's doing.
Corrected entry: When Wolverine states to Storm he's the only one who can stop Jean at the end - what about the child who they were rescuing who can take mutant powers away?
Correction: The kid's power only has a range of a few feet. He'd have been torn apart long before he got close enough to Jean to affect her.
Corrected entry: The loud voice in the background giving orders as the soldiers trade in their weapons and equipment for the plastic cure guns is R. Lee Ermey, the drill instructor from Full Metal Jacket.
Correction: Pointing out the name of the actor playing a part does not qualify as trivia.
Corrected entry: In the scene where Jean and Magneto are overlooking the camp of mutants, Magneto talks to Jean about her powers. He holds up the weapon with the antidote and says he can only control metal then levitates the weapon. The weapon was supposed to be made of plastic as revealed later in the movie. The alternate scene shows him levitating a metal mug instead which made sense with his line.
Correction: *That* particular weapon had metal in it. It was taken from one of the guards on the transport vehicle. Since Magneto was not one of their prisoners, they'd have no reason to carry metal free weapons.
Corrected entry: When Shadowkat meets Leech in the complex, she can't phase through the wall to escape because being near Leech negates her mutant powers. When Juggernaut enters the same room, he is unable to break through the wall for the same reason, however Juggernaut technically isn't a mutant, his abilities were received through mysticism so his powers shouldn't have been affected.
Correction: Inapplicable comic book mistake. In the movie, Juggernaut IS a mutant.
Corrected entry: While Wolverine is trying to walk toward Jean in the final showdown. His clothes (and chunks of his skin) are ripped off. There are a view shots where his pants have been ripped down to boxer brief length, but after he reaches Jean, they are full pants again.
Correction: If you look closely, you can see that Wolverine's pants haven't really been cut down to shorts, but rather there's a big hole torn from mid-thigh to mid-calf.
Corrected entry: In the scene where Rogue talks to Wolverine about going to get the cure, she reveals that her real name is Marie. In the first X-men film, Rogue introduces herself to Wolverine as Marie after he reveals that his real name is Logan therefore eliminating the need for her to reveal her name in the third film.
Correction: She is not "revealing" her name. She is pointing out that she wants to be called Marie, instead of Rogue, since she is going to get the cure and become "normal".
Corrected entry: During the final battle, Magneto pulls cars up from the bridge behind him and catapults them onto the island. However, in later wide shots we can see behind him and the bridge is still jammed solid with vehicles.
Correction: It would be a good idea for him to constantly drag more cars closer to him, whilst fire others, so he'd have a ready supply "car-tillary", for later use.
Corrected entry: How did Mystique know where Magneto was in the forest? He doesn't tell her, and there's no secret meeting base or anything, just a quick set-up hideout and a bunch of tents set up by the mutants.
Correction: We do not know if this meeting place was somewhere where they had already been. Somewhere that the officials and Xavier's people would not think to look.
Corrected entry: Juggernaut's power is the ability to gain great strength but only by building momentum. This was proved when the loss of momentum, by locking his arms and legs down in the mobile prison, is how they were able to contain him. However, when Kitty Pryde sinks him in the floor, he bursts out effortlessly, despite having his arms and legs fully pinned down in concrete and unable to gain momentum.
Correction: Even though Juggernaut is not a mutant in the comic that is not how his power works. Juggernaut has uncharted superhuman strength like the Hulk and could have easily broken through the floor like he did. When he was in the back of the truck the point they were trying to get across was that he is so strong that nothing can stop him short of fully restraining him as so he can not move or even wriggle.
Corrected entry: In the forest of the Brotherhood, when Wolverine first extends his claws, the sleeve of his leather jacket can be seen above his fist. Despite the fact that he never is seen taking it off, he is only wearing a tank top a second later.
Correction: That's not his leather jacket's sleeve. That's his wrist band.
Corrected entry: When we see Magneto move the Golden Gate Bridge to Alcatraz he sets it down so that there is a bridge across the mainland to Alcatraz. The bridge is supported only by the island and the mainland, this wouldn't happen as a bridge that long and heavy would just collapse in the middle, that is why suspension bridges with supports in the middle are needed.
Correction: Already listed. See minor mistakes.
Corrected entry: In the van when the brotherhood attacks to get Mystique, she is shot with one of the darts of the gun. This should leave three. Magneto keeps the gun. But when Jean takes it apart and plays with Magneto, there are four again.
Correction: The handgun used by the guard in the moving prison does not resemble the guns used later by the soldiers. There is no way to say for certain how many needles go into the handgun, so it may have held five darts.