Continuity mistake: Archangel's alumni status (or lack thereof) with the X-Men varies throughout the series. Later episodes showed him to be an original member of the team just like in the comics, yet when he first appeared in Season 1, none of the other original members in the show (Cyclops, Jean Grey and Professor X) seem to know who he is. The time traveling mutant Shard also states in Season 4 that he is destined to eventually join the X-Men.
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: The position of the police cars around Sabretooth change from shot to shot. (00:01:15)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is first seen eavesdropping on her foster parents, you can see the shelves of their entertainment unit are empty. Moments later when her foster mother is questioning if Jubilee is really a mutant, her husband shows her what Jubilee did to the VCR just by touching it, and you can see the bottom two shelves now have items on them. Additionally, the coffee table goes from having a blue top with a brown border within it, to being a solid brown top altogether. (00:01:39 - 00:02:17)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is eavesdropping on her foster parents, her right hand is resting on and pointing in the same direction as the railing. When the shot changes, her hand is now nearly perpendicular to the railing. (00:01:39)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee's bedroom is first shown, the door is on the left side of the wall, she has a poster next to the door of what appears to be a chicken in a boxing outfit with gloves, a bookshelf next to that poster, a nightstand next to her bed and a poster of a girl playing drums on the wall behind the nightstand. After the Sentinel crashes through the window and pulls her bed out of the house, the nightstand and drummer poster have disappeared. When her foster mother comes into the room to see if everything is OK, the door is suddenly in the center of the wall, and the room itself, save for one poster on the wall that the head of the bed was on, is now completely empty. (00:01:54 - 00:02:51)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When the dog is barking at the Sentinel, the sidewalk is crumpled from the Sentinel landing on it. When the Sentinel reaches out for the dog, the sidewalk is now undamaged. (00:02:06)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee's foster father is showing his wife what Jubilee did to the VCR, the glass door for the entertainment shelf goes all the way to the top. When the wife is asking her husband if he is sorry they took in Jubilee, the glass door is now only tall enough to cover the bottom and middle shelves. (00:02:17)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is first shown in the arcade, the space between the rows of games is roughly six feet. When Jubilee runs out of the arcade, the corridor is suddenly much wider. (00:02:57 - 00:03:37)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: Just before Jubilee accidentally destroys the arcade game she is playing, you can see a basket of chili fries resting on the game's control panel, and the chili is a dark green color. When the shot changes, the chili is now reddish-brown. (00:03:23)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When the arcade manager is confronting Jubilee after she accidentally destroyed the game she was playing, he is several feet away from her, with other patrons between them. When the shot changes, he is suddenly in her face. (00:03:27)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Gambit lands in the car, his trenchcoat is entirely within the car. When the Sentinel is shown approaching the car, the bottom of the trenchcoat is now hanging over the passenger side door. (00:07:11)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Gambit is blasted through the sign advertising the car that can be won, there is a noticeable amount of spacing between the exclamation point and the end of the sign. When the Sentinel begins approaching Gambit, the exclamation point now goes nearly to the edge of the sign. (00:07:11)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is trying to open the door to the infirmary, the door handle is pointed at roughly 3 o'clock. When she uses her powers to blast the handle off, it is now pointed at roughly 5 o'clock. (00:08:42)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is trying to gain entry to the Danger Room, she is pressing random buttons that light up. When the shot changes, some of the lit up buttons are not ones she pressed, and some of the ones she pressed are no longer lit up. (00:10:34)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Gambit and Wolverine are sparring in the Danger Room, at one point Gambit dives onto a piston and then rolls off moments before it smashes him into another piston, with a piece of the bottom right of his trenchcoat being torn off in the process. When Jubilee is explaining to everyone that she was trying to help Gambit, his trenchcoat is now untorn. (00:11:07 - 00:11:43)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee blasts Wolverine across the Danger Room, Gambit is shown lying flat on the ground. When the shot changes, he is now resting on his elbows. (00:11:30)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is saying "That's a nice way of saying 'mutants'," the black horizontal line on her left earring briefly turns the same red color as the rest of the earring. (00:12:59)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When the Sentinel is resting against the building while lying in wait for Jubilee, the building itself has a solid exterior with the occasional window. When the shot changes, it is now a glass building. Additionally, when the Sentinel was resting against the building, its entire body was obscured, but when the shot changes, part of the right side of its body was sticking out. (00:14:35)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: The Sentinel that is intercepting Jubilee when she is running back home to check on her foster parents is initially following her along the sidewalk from behind, but suddenly catches up to her in a perpendicular path from the street. There are only two Sentinels shown in this scene and the other one caught her from the front as it turned a corner, so it couldn't have been a different one. (00:14:40)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When the civilian slams on his brakes to avoid hitting the Sentinel, you can see he is wearing sunglasses, but within the same shot, the dark lenses turn into clear lenses. (00:14:59)
