Savage Land, Strange Heart (1) - S3-E8
Continuity mistake: At the very beginning of the episode, Sauron can be seen wearing the necklace of Garokk. Not only is he not wearing the necklace a few shots later, but he isn't even supposed to have the necklace until a few minutes later in the episode when Zaladane gives it to him after he reverts to his human form. (00:01:05 - 00:04:10)
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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