For some reason, some of the endings are capped with a character whispering "Arrright!", even being subtitled as such. Witness it in Raiden's ending and Sub-Zero's ending. This is present in both the arcade and N64 versions (which use the in-game engine), but left out of the FMV endings in the PS port and MK Gold.
Scorpion: You are now free from my curse. Live well, Lin Kuei warrior!