Other mistake: When using the skeleton rip fatality on Sheeva, the skeleton always has two arms, despite the fact that Sheeva has four.
Plot hole: At Scorpion's bio, it was revealed that he was asked to join Shao Kahn's army, and apparently, Scorpion agreed until he discovered that Sub-Zero, who in the last game he had sworn to protect, was in Earthrealm, which was being invaded. It makes no sense as to why he would ever join Shao's forces after fighting against them in the previous game, and we aren't told if Shao made any kind of deal with him. An in-character Scorpion would have either resisted the invaders or stayed out of the conflict.
