Continuity mistake: When Morph is wiping down the bar, he is wiping from left to right. When the shot changes, he is wiping up and down. (00:07:09)
Continuity mistake: When the riverboat captain is talking about how Wolverine is looking for Morph, Wolverine is standing several feet away looking over the side of the boat. When the shot changes, Wolverine's left arm is suddenly behind the captain's back, offering his monkey a peanut. (00:04:41)
'Til Death Do Us Part: Part 2 - S2-E2
Continuity mistake: When Wolverine is saying it's time for the big game, the pink stripes on Gambit's right leg are on the inside of the leg, when they should be on the outside. (00:17:30)
'Til Death Do Us Part: Part 2 - S2-E2
Continuity mistake: When Jubilee is first shown in Storm's hospital room, there is a dresser and some other equipment against the wall behind her. In the final shot of the scene, the dresser and other equipment have disappeared, and it is just a wall with a clock on it behind her. (00:12:40)
'Til Death Do Us Part: Part 2 - S2-E2
Continuity mistake: When Cyclops and Jean are first shown shackled to platforms inside Mr. Sinister's lair, there is about 6 feet between them. When the shot changes, they are only inches from each other, and Mr. Sinister has suddenly appeared on the platform. (00:11:42)
'Til Death Do Us Part: Part 2 - S2-E2
Continuity mistake: After Morph steals the Blackbird, there is a shot of Wolverine standing by his lonesome at the end of the hangar and looking out. When the shot changes, Beast is suddenly shoulder to shoulder with him. (00:11:32)
'Til Death Do Us Part: Part 2 - S2-E2
Continuity mistake: When Graydon Creed is giving his speech, the tail of the bird on the backdrop behind him is several feet above his head. When the shot changes, the tail is about level with his shoulders. (00:06:35)
'Til Death Do Us Part: Part 2 - S2-E2
Continuity mistake: When Rogue and Beast first enter Storm's hospital room, Rogue is standing at the head of Storm's bed. When Rogue berates Beast for not assisting her and Storm at the end of the previous episode, she is now standing at the foot of the bed. (00:05:45 - 00:06:06)
'Til Death Do Us Part: Part 2 - S2-E2
Continuity mistake: When Beast and Rogue are standing outside the hospital, there is a beige car in front of them. When the shot changes, the car is gone. (00:05:12)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When the Friends of Humanity are getting in the car to escape from the fight, the backseat area of the car is shown to have window louvers that are the same red color as the car's body. When the shot changes and shows the car from the interior, the windows are plain glass. (00:12:09)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When the bartender begins saying "I bet you know the President," she is standing by Beast's left shoulder. When the shot changes, she is face to face with him. (00:11:13)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Morph, disguised as Wolverine, bumps into Rogue, she is holding a steaming mug of coffee. When she tells him she is going to the rec room to take a nap, she is holding the mug sideways, with no steam coming from it. The camera was on her face for most of this sequence, so she couldn't have finished drinking it, and there is no spilled coffee on the floor, so the mug should still be steaming. (00:14:09)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Beast is saying "What's in a name," he and Cyclops are standing on the right side of the red carpet, and Gambit is standing right behind Beast. A couple of shots later, Beast and Cyclops are now standing on the left side of the red carpet, and Gambit is now standing several feet away by the door. (00:05:32)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Wolverine stabs the Danger Room doppelganger of Cyclops, he is running him through in the center of the chest. When the shot changes, he is now stabbing him through the left collar bone area. (00:03:04)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Wolverine leaps out to engage the Danger Room doppelganger of Cyclops, his claws are extended. When he lands, there is a closeup shot of his right hand, and his claws are suddenly retracted, and he extends them again. (00:02:16)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Rogue takes the unconscious Gambit into the War Room, she sets him down on the center table and stands at the edge of it. When she is showing Storm that she absorbed his powers, she reaches over to grab a coffee mug. There were no coffee mugs on the table when Rogue set him down, and they would be out of reach if they were located on another table. (00:16:57)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Rogue wakes up after Gambit kisses her, there is a pink pillow on the sofa. When the shot changes to her inadvertently kinetically charging the armrest with his powers, the pillow has disappeared. (00:16:23)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Gambit is trying to show Jubilee a card trick, he is on her left, and she slightly turns her head to face him. When the shot changes, she turns her head to face him again. (00:14:28)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Wolverine is driving away from the mansion, there is a tree inside a circle hedge that wasn't there in previous shots. (00:13:40)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Morph is watching Wolverine leave the mansion in his jeep, the jeep is missing in the first shot. (00:13:40)
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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