Wang Koh-San's full name is changed to "Park" in the Korean version of the game.

There's an unused animation where Wyler reverts back to his normal form while facing down. Since he never falls on his face (no matter what you do, he always falls backwards, even when losing by time over) this goes unused.

Sinclair and Wyler have walking animations that were meant to be displayed on the character selection screen. But since their characters can only be selected off-screen, the animations went unused.