Street Fighter II · Super Nintendo Entertainment System · 1992 · Japan → USA
Street Fighter II's North American release swapped the names of three of its four final bosses — so that the Mike Tyson-inspired boxer would not be called "M. Bison" — creating a Japan/US naming split that persisted for decades.
Street Fighter II: The World Warrior (1991) was developed with Japanese character names for its four end bosses, three of which Capcom's North American office changed for the 1991 American arcade release. In Japan the American boxer was M. Bison, the claw-wielding Spanish fighter was Balrog, the Muay Thai king was Sagat, and the dictator was Vega. In North America the boxer became Balrog, the claw fighter became Vega, and the dictator became M. Bison, while Sagat kept his name — chiefly so that a character modelled on Mike Tyson would not carry a name that read as "Mike Bison". The shuffle created a naming split between Japanese and North American audiences that persisted through twenty years of sequels and re-releases. Players who learned the game in North America knew a different set of names from players who learned it in Japan or through Japanese sources. Online fighting game communities of the 2000s developed shorthand — "JP names" versus "US names" — to disambiguate discussions of character names. Beyond the names, the SNES conversion trimmed some details of the arcade original, but its moves, characters and balance were carried over almost intact.
The decision to rename the boxer character was driven by a specific legal risk: the character was visually modelled on Mike Tyson, the most dominant heavyweight boxer of the late 1980s. His fighting style, his appearance, and elements of his personality in the game were recognisably Tyson-derived. The Japanese name "M. Bison" was too obviously readable as "Mike Bison" — a thin pseudonym that invited the lawsuit the character's design already risked. Capcom's North American team chose to rename the character "Balrog" and perform a three-way shuffle of the Japanese boss names to make the assignment less systematic.
The shuffle had no narrative logic — the character called Vega in Japan and in the game's development documentation was renamed M. Bison in North America while a different character took his name. For players who engaged with the game through English sources, the names were simply what they were; only players who encountered Japanese arcade material, import games, or internet communities would encounter the discrepancy. The fighting game community eventually developed conventions to navigate it, but the naming split caused genuine confusion for years.
Street Fighter II's SNES content changes were part of the same policy framework that affected every SNES game of the period. The result was a game that was visually slightly different from the arcade version and the Japanese console version but functionally identical — the same moves, the same balance, the same gameplay experience with different visual presentation in a few specific places.
The context of the SNES release matters here: Capcom's Street Fighter II was the most important third-party SNES title of its release year, selling 6.3 million copies and establishing the platform's credentials as the home for arcade ports. The content changes did not affect sales or reception in any measurable way; players in 1992 were evaluating Street Fighter II against the absence of good home fighting game options, not against an arcade-perfect standard. The changes that seem notable in retrospect were invisible to most players at the time of release.