Time Fugitives: Part 1 - S2-E7
Continuity mistake: Throughout the episode, Bishop's goatee alternates between fully covering his chin and having a small spot of exposed skin beneath the soul patch. Sometimes there is even the outline drawn of the exposed skin beneath the soul patch, but it is colored the same as the goatee. (00:05:10 - 00:20:05)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Bishop returns to the year 2055, his shoulder pads are yellow. When he is approaching Forge, the shoulder pads are now the same blue color as the rest of his outfit. (00:05:12)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Bishop is shown returning to the year 2055, he looks out the window to a see a pristine looking city, and claims his intervention in the past to be a success. This is a contradiction to Bishop's return when it was originally shown at the end of the season 1 episode Days of Future Past: Part 2, in which he appeared in a run-down city and remarks that everything looks the same as it did when he left. (00:05:15)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Forge is first shown standing in front of the tube containing Wolverine's skeleton, the skeleton is incorrectly shown to be around 7 feet tall (Wolverine is only 5'3"). A couple of shots later, the skeleton is now shown to be more accurately sized. (00:05:19)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: In the second shot of Storm and Jubilee standing in front of the bookstore, there is either a light or a security camera on the ceiling two tiles in front of the gray sign that wasn't there in the first shot. (00:07:25)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Jubilee approaches the manager of the electronics store, his name tag is the same yellow color as his shirt. A couple of shots later, it is now the same blue-gray color as his tie. (00:07:50)
Time Fugitives: Part 1 - S2-E7
Revealing mistake: When the electronics store manager collapses onto the display stand, if you look closely, you can see the business cards he falls onto fly into the air before his head makes contact with the stand. (00:08:23)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When the man accuses Jubilee of giving the electronics store manager the plague, the manager's shirt has changed from yellow to gray. (00:08:24)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When the man in the electronics store is calling Jubilee a plague carrier, her purple jacket and black hair have been colored green and dark brown, respectively. (00:08:37)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Beast is telling Jubilee she needs to eat more vegetables, the black and red middle section of his waistband turns blue. (00:09:08)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Beast is giving Jubilee a checkup, his labcoat alternates between having no breast pocket and having one with a tongue depressor in it. (00:09:22)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When the quarantine sign is being stapled to the door, it is black and yellow striped, with an orange stripe running the opposite direction, and "Quarantine" written on the orange part. When the mob is trying to get into the building, the sign is now gray with a single yellowish-gray stripe running diagonally across it, and no writing. (00:10:14 - 00:10:44)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Storm is saying the man on TV is the one who attacked Jubilee at the mall, the portion of Wolverine's mask by his cheek is colored yellow, and the X within a circle on Rogue' chest as well as the stripes on her collar are colored red. All these things should be black. (00:10:31)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Bishop is trying to disperse the mob, the circular patches on his shoulders are red with yellow borders, and a thin circle design is within the red circle itself. Moments later when he throws Wolverine off himself, the red circles are now blank, and their borders are black instead of yellow. (00:11:00 - 00:11:50)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: After Storm informs Cyclops that a mob is attacking Bishop, a shot of the rest of the team in the Blackbird shows that Gambit's neck is flesh colored when it is supposed to be black from wearing his headgear (this is corrected when the scene is reprised in the next episode). (00:11:25)
Time Fugitives: Part 1 - S2-E7
Revealing mistake: When Wolverine is free falling from the Blackbird, his left leg passes through Cyclops' right arm. (00:11:40)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Bishop is saying he was trying to save lives, the strap running through Gambit's jacket sleeve is colored blue, when it should be the same brown color as the rest of the jacket. His left hand is also bare, despite the fact that he had been showing his gloves throughout the scene. (00:12:37)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Wolverine says "Again?" after Bishop says he was trying to save lives, the part of his mask next to his left cheek is colored yellow, when it should be black. (00:12:41)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Bishop is saying "You all must have died in the plague," the temporal band he wears on his right arm is missing. (00:12:48)
Time Fugitives: Part 1 - S2-E7
Continuity mistake: When Beast is saying that the virus was genetically engineered, the chin area of Bishop's black goatee is the same color as his skin. (00:13:01)
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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