Continuity mistake: When Beast first enters Carly's room at the end of her procedure, there is no window on the door. Later when Carly's father enters, the door now has a window on it. (00:11:05 - 00:12:05)
Continuity mistake: When Dr. Bohlson is starting to remove the bandages around Carly's eyes, he is not wearing a stethoscope. After Beast interrupts the procedure and walks up to Carly, Bohlson is suddenly wearing a stethoscope. (00:11:05)
Continuity mistake: When Dr. Bohlson is cutting through the bandages around Carly's eyes, there is an audible tear, but when he stops cutting and steps away, the bandages are completely intact. (00:11:10)
Continuity mistake: When Dr. Bohlson follows Beast out of Carly's room, he closes the door behind him. A couple of shots later, the door is open. The door is then closed again when Bohlson is reentering the room. (00:12:30)
Continuity mistake: When Cyclops says to Beast "We're ready to help," his left hand comes into view, and you can see it is bare. Moments later, he is now wearing a glove on that hand. (00:14:55)
Continuity mistake: When Graydon Creed is interrogating Carly, their positions in the room are different depending on the shot. When first shown, she is tied to a chair, with a bare wall a few feet to her left. When Wolverine enters the room, he enters through a door that is now on the wall on Carly's left that was previously bare. When Wolverine tells Creed to let her go, they are suddenly right next to a wall on Carly's right. Then when Creed is pointing the gun at Wolverine and for the remainder of the scene, Carly is suddenly facing the door Wolverine came through. (00:15:35 - 00:17:50)
Continuity mistake: When Carly is telling Graydon Creed to leave her alone, her head is tilted towards her right shoulder. When the shot changes, she is facing straight. (00:15:57)
Continuity mistake: When Wolverine interrupts the two men playing poker, you can see there are only cards and chips on the table. When the shot changes, a mug has appeared next to the white man's left elbow. (00:16:28)
Continuity mistake: When Wolverine cuts the doorknob off the door, you can see some of the door on the right side is still intact. When the shot changes, this part of the door is now completely missing. (00:16:55)
Continuity mistake: When Wolverine is asking Graydon Creed if he looks familiar to him, his cuspids are very long and sharp. Later when Wolverine is sneering at Creed during his breakdown, you can see his cuspids are now flat and not as long. (00:17:29 - 00:19:36)
Continuity mistake: When Beast is kissing Carly on the forehead, his left eyebrow goes from being black to blue to black again. (00:20:20)
Mojovision - S2-E11
Continuity mistake: When Major Domo answers Mojo's call, he is standing in a doorway. When the shot changes, he is already walking down the hallway alongside Mojo. (00:02:08)
Mojovision - S2-E11
Continuity mistake: When Mojo first starts talking to Cyclops through the television screen, Jean is standing next to Cyclops on his right. She then disappears and reappears for the next several shots, and when Mojo is telling Cyclops that he's offering the X-Men a lifetime television contract, she walks up to Cyclops. (00:04:59 - 00:05:48)
Mojovision - S2-E11
Continuity mistake: When Mojo is talking to Cyclops through the television screen, the screen is roughly the size of a car's back-seat window. When the shot changes, the screen is drastically larger. (00:05:02)
Mojovision - S2-E11
Continuity mistake: When Jean is asking Mojo to leave Cyclops alone, some of the television screens that Cyclops just destroyed with his optic blasts are now intact. (00:06:28)
Mojovision - S2-E11
Continuity mistake: When Mojo is telling Cyclops that he can write him out of the first act, the middle of Jean Grey's outfit is peach-colored, when it should be blue. (00:08:51)
Mojovision - S2-E11
Continuity mistake: The cube that Mojo has the X-Men captive inside is transparent on all sides, except for when Cyclops is saying "The X-Men don't fight without a reason." In this shot and the following one, the wall behind them, as well as the ceiling, are now paneled. (00:09:36)
Mojovision - S2-E11
Continuity mistake: When Mojo is saying "Control room," Rogue is suddenly missing from the cube that the X-Men are trapped in. She reappears in the next shot. (00:09:58)
Mojovision - S2-E11
Continuity mistake: When Cyclops and Storm are about to be shuffled in to their television program, Jubilee can be seen standing between Wolverine and Storm, despite the fact that she was not among the X-Men that were abducted by Spiral, nor is she seen again for the rest of the episode. (00:10:05)
Mojovision - S2-E11
Continuity mistake: After Rogue and Beast have been shuffled out of the cube and into their television program, Jean is shown sitting down and leaning back on her elbows, while Wolverine is on his knees. When the shot changes, both are now standing upright. (00:13:08)
Answer: Chris Potter, the original Gambit voice actor, did indeed quit the role in the 4th season. His last episode was The Phalanx Covenant Part 1 so it seems reasonable that Fox would limit the use of the character even though it was recast. It doesn't appear that Potter left the role due to animosity, he stated in an interview that he wished to play Gambit in the first live action X-Men film.
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