Beyond Good and Evil: Part 3 - S4-E10
Continuity mistake: When Wolverine sniffs out one of Apocalypse's booby traps, the portion of his mask that runs down either side of his cheeks that is normally colored black is now colored yellow. (00:16:30)
Beyond Good and Evil: Part 3 - S4-E10
Continuity mistake: When the Four Horsemen are retreating back into the pyramid, the opening is shown to be illuminated. When they are shown entering the opening, it is in darkness. (00:17:15)
Beyond Good and Evil: Part 3 - S4-E10
Continuity mistake: At the end when Mystique says "What was that?" her normally-red eyebrows are colored white. (00:19:40)
Beyond Good and Evil: Part 3 - S4-E10
Continuity mistake: The position of Cable's gun when it is holstered on his back varies throughout the episode. Sometimes it is slanted at a 45° angle with the butt going over his right shoulder, sometimes it is sticking straight up with the butt going over his left shoulder, etc.
Beyond Good and Evil: Part 4 - S4-E11
Continuity mistake: When the X-Men are fleeing the pyramid, Gambit's normally-black pants are colored blue. (00:03:20)
Beyond Good and Evil: Part 4 - S4-E11
Continuity mistake: When Mr. Sinister confronts Magneto and Mystique, he is by himself. In the next shot, the Nasty Boys are suddenly behind him. (00:09:15)
Beyond Good and Evil: Part 4 - S4-E11
Continuity mistake: The same time portal with the image of the neanderthal by the fire is erased by Apocalypse twice. (00:12:45)
Beyond Good and Evil: Part 4 - S4-E11
Continuity mistake: The end of the episode shows Xavier standing with no assistance. The only time in the series that the use of his legs were restored were a side effect of him losing his powers. He has his powers in this scene, so there's not really any reason for him to suddenly have the use of his legs back. (00:19:15)
Have Yourself a Morlock Little Christmas - S4-E12
Continuity mistake: The boxes and ribbons in the stack of gifts that Jubilee is carrying change color. (00:05:20)
Have Yourself a Morlock Little Christmas - S4-E12
Continuity mistake: Jubilee's presents suddenly become smaller when she, Storm and Wolverine depart for the Morlock tunnels. (00:08:45)
Have Yourself a Morlock Little Christmas - S4-E12
Continuity mistake: When Leech is first shown in his sick bed, he is shirtless and under the sheets. When he begins receiving a blood transfusion from Wolverine, he is fully clothed and also wearing a beanie. Given the weak and near-death state he was in, it's extremely unlikely the other Morlocks would bother dressing him. (00:09:20 - 00:14:15)
Have Yourself a Morlock Little Christmas - S4-E12
Continuity mistake: Callisto's eye-patch changes sides when she is berating Storm. (00:09:30)
Have Yourself a Morlock Little Christmas - S4-E12
Continuity mistake: When Jubilee is holding Mariana, her right arm goes from cradling Marian's head to being under her bottom. Jubilee also goes from wearing yellow gloves to being bare-handed. (00:11:40)
Have Yourself a Morlock Little Christmas - S4-E12
Continuity mistake: The brown patch on Ape's left leg disappears when he gets up to assist in Wolverine's blood transfusion for Leech. (00:13:15)
Have Yourself a Morlock Little Christmas - S4-E12
Continuity mistake: Rogue's headband is flesh-colored when Beast says "It would appear that my face is not the world's most reassuring." (00:16:30)
The Lotus and the Steel - S4-E13
Continuity mistake: The village elder Yoshida-san suddenly has sideburns and a goatee when Soichi is mocking Wolverine. He is clean-shaven for all other parts of the episode. (00:07:25)
The Lotus and the Steel - S4-E13
Continuity mistake: When the biker gang is raiding the village towards the end of the episode, the leader of the gang alternates between having two spikes on each shoulder of his jacket, having them only on the left shoulder, or having none at all. (00:15:55)
The Lotus and the Steel - S4-E13
Continuity mistake: The amount of fish that fall out the net is more than could have fit into it. (00:16:25)
The Lotus and the Steel - S4-E13
Continuity mistake: When the biker discovers the children hiding in the tree, his motorcycle is parked right next to the tree with the left side of his motorcycle facing the pit. When he gets back on the motorcycle, it is suddenly several feet away from the tree and the front wheel is facing the pit. (00:16:30)
The Lotus and the Steel - S4-E13
Continuity mistake: Wolverine tears off the red sun portion of the Silver Samurai's costume. Moments later it has reappeared. (00:19:30)
