'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: Beast disarms a member of the Friends of Humanity whilst perched on a street lamp. When the angle changes to a wide shot, Beast is much higher on the lamp post and would have been too far out of reach to disarm the man in the first place. (00:11:45)
'Til Death Do Us Part: Part 1 - S2-E1
Other mistake: When Wolverine, Gambit and Beast are battling members of the Friends of Humanity, Wolverine slices through the gun of one of their members. From the angle Wolverine is standing respective to the F.O.H. member, he could not have possibly sliced through the gun without also slicing off the man's left hand. (00:12:00)
'Til Death Do Us Part: Part 1 - S2-E1
Plot hole: The establishing shot of the White House indicates that President Kelly's press conference is taking place there. A member of the Friends of Humanity disguised as a mutant busts into the room and starts terrorizing the reporters and destroying everything. The Secret Service would have either detained or shot this man long before he could have even gotten close to the press conference. Graydon Creed also shoves a security guard that tries to intervene but somehow isn't arrested for it. (00:05:50 - 00:06:35)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When the bartender is asking Beast if he knows the President, there is a single red striped 11 ball on the pool table in the background. When the shot changes, there are now what appears to be the solid green 6 ball, and the purple striped 12 ball. (00:11:04)
'Til Death Do Us Part: Part 1 - S2-E1
Revealing mistake: After Morph laughs when the police have shot Storm out of the sky, there is a split-second flash of the establishing shot of the Veteran's Building Jubilee went to a little earlier in the episode. Note, this mistake may only occur on Disney+. (00:20:31)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Morph is looking at the mansion through a pair of binoculars, the binoculars have two lenses. When the mansion is shown from the binoculars' point of view, there is only one lens. (00:13:43)
'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 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 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
Other mistake: When Morph, disguised as the reverend, is saying goodbye to Cyclops, the characters in the background never move a muscle. (00:04:10)
'Til Death Do Us Part: Part 1 - S2-E1
Revealing mistake: When Morph has sabotaged Beast's Danger Room session, the same shot of Beast running away from the projectile apparatus is used twice. (00:18:08)
'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
Revealing mistake: When Morph, disguised as Storm, is walking into the kitchen to talk to Jubilee, he appears out of thin air. (00:15:37)
'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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