Continuity mistake: When Xavier is explaining to Wolverine the importance of vigilance, Beast can be seen directly behind him. When the shot changes, Beast is no longer standing behind Xavier. (00:18:25)
Secrets, Not Long Buried - S4-E15
Continuity mistake: The mutants that have gathered for Solarr's speech are in different places throughout depending on the shot. (00:16:50 - 00:18:50)
Continuity mistake: The Colony's Acanti ship goes from having its face buried into the walls of the chasm and its body above ground to having its body partially buried in the valley floor and its face free from the wall. (00:06:50 - 00:08:10)
Revealing mistake: Wolverine's nipples literally disappear from his chest when he says "Do I feel lousy." (00:07:15)
Continuity mistake: Rogue's vanity has a teddy bear and a telephone on it. When Gambit comes into her room, the phone has disappeared. (00:03:55)
The Lotus and the Steel - S4-E13
Continuity mistake: Shoulder pads appear on Jubilee's coat at the end of the episode. (00:19:45)
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)
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: 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)
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: 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: Callisto's eye-patch changes sides when she is berating Storm. (00:09:30)
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: The boxes and ribbons in the stack of gifts that Jubilee is carrying change color. (00:05:20)
Beyond Good and Evil: Part 3 - S4-E10
Continuity mistake: When Cable is ordering Xavier to probe Sabretooth's mind, Cable is carrying his gun in his right hand. When the shot changes, Cable is no longer holding his gun. (00:10:55)
Beyond Good and Evil: Part 3 - S4-E10
Continuity mistake: When Cyclops and Cable are arguing about the course of action to take, Cyclops is on the viewer's left and Cable on the right. When Wolverine interrupts them, they have swapped sides. (00:10:25)
Beyond Good and Evil: Part 2 - S4-E9
Continuity mistake: When Psylocke renders Archangel's guard dog unconscious, his chain is still attached to his collar. When Archangel checks on the dog, the chain is missing. (00:09:50)
Beyond Good and Evil: Part 1 - S4-E8
Continuity mistake: Gambit and Beast have instantly appeared behind Wolverine after he asks how the Nasty Boys got inside the mansion. (00:17:55)
Beyond Good and Evil: Part 1 - S4-E8
Continuity mistake: When Hairbag knocks Wolverine down, Rogue can be seen lying on the ground next to Storm. A couple of shots later she is shown lying next to Gambit. (00:12:40)
Continuity mistake: In the flashback during Magneto's memorial, when the Nazis are approaching his home it says "Lehnsherr" on the door. After they kick the door open, the writing on the door has disappeared and either a hatch or a small window has appeared on the door from nowhere. (00:06:20)
