Although Mike Tyson is not fightable in the original limited edition Japanese release of the game, he is nonetheless present in its data as a fully coded, yet unused opponent. Tyson's associated text and screens are also fully intact, though the code to bring up the "Mike is waiting for your challenge!!" screen is absent from the game's data. Additionally, his ring palette is not implemented, with the background consequently defaulting to a gray mat and orange audience not featured by any opponent accessible in any of the three versions of the NES release. Taken together, this implies that Tyson was already under consideration as the game's celebrity guest during the limited edition's development.