Slave Island - S1-E7
Continuity mistake: After Gambit unlocks his collar, he lets the collar fall to the ground. In the next shot, the collar is visible on the ground a couple feet in front of him. In the shot after that when he retrieves the gun, the collar is no longer visible on the ground. (00:12:50)
Slave Island - S1-E7
Continuity mistake: The keyhole on Gambit's inhibitor collar alternates between being mostly the same yellow color as the rest of the collar, and being gray such as when he unlocks it.
Slave Island - S1-E7
Continuity mistake: When Gambit is being escorted into the Sentinel factory, he has two guards behind him on his right and left. When the shot changes, the guards have disappeared. (00:11:00)
Slave Island - S1-E7
Revealing mistake: When Gyrich walks forward to shake the Leader's hand, the ground beneath them is noticeably shaking, possibly indicating a composite shot. (00:10:35)
Slave Island - S1-E7
Audio problem: When Trask is saying "All it requires is an outside power source," his mouth does not move in sync with the last two words. (00:10:20)
Slave Island - S1-E7
Continuity mistake: Throughout the episode, the inhibitor collars worn by the captured mutants alternate between having a leveled edge like a hardware nut, to having a rounded edge like a finger ring.
Slave Island - S1-E7
Continuity mistake: When the Sentinel puts Jubilee in the detention box, it is still dark outside. A couple of shots later and there is a considerable amount of daylight in the sky. (00:09:30)
Slave Island - S1-E7
Continuity mistake: Before the mutants ambush the guards, they are walking in a single-file line, with Sunfire in front, followed by Jubilee, Mystique, Caliban, an unnamed female mutant, and Aurora. A couple of shots later, either Aurora or her similarly-dressed twin brother Northstar is suddenly at the front of the line. (00:08:55)
Slave Island - S1-E7
Other mistake: When Cyclops, Rogue and Jean Grey exit the War Room to depart for Genosha, at the top of the door frame there is a black spec moving around, possibly indicating that there was some debris or a clump of dust on the animation cells or the camera lens itself during filming. (00:08:15)
Slave Island - S1-E7
Continuity mistake: When Cyclops hangs up the phone, he is standing next to a table on which the phone is located. When the shot changes, either the table has disappeared altogether or Cyclops has suddenly moved several feet away from it. (00:06:10)
Slave Island - S1-E7
Continuity mistake: When Cyclops hangs up the phone, the base of the phone shows three rows of five buttons. When the shot changes, there are now only four buttons per row. (00:06:10)
Slave Island - S1-E7
Continuity mistake: Gambit and Jubilee are shown to be grouping together what appears to be several pieces of malleable rebar. When the shot changes to Gambit reassuring Jubilee that Storm is alive, he is shown to be working with a single piece of rebar. When the shot changes again, they are back to working with a bunch of rebar. (00:05:00)
Slave Island - S1-E7
Other mistake: When Storm sends the Genoshan prison guard flying into the Blob, he knocks the Blob over. The Blob's powers prevent him from being moved, hence why he is sometimes called the Immovable Blob. Other episodes demonstrated his ability to stand his ground against force, such as being punched by Rogue or being blasted by Cyclops' optical beam.
Slave Island - S1-E7
Continuity mistake: When Cameron Hodge is telling Gyrich and Trask about Cable, the books on the table move closer to Hodge between shots. (00:13:10)
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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