In the Street Fighter series, certain characters have "unknown" information; most of them are characters that act as (or are related to) the final boss, and are thus often connected to Shadaloo or, in the Street Fighter III series, the Illuminati.
Stages with unknown locations tend to be of a similar nature, or else, in the case of at least one Street Fighter IV, is not a static stage (e.g. a cruise ship).
Flag of S.I.N.
Flag of Shadaloo
Flag of the Illuminati
Flag of the Satsui no Hado
Flag of the Power of Nothingness
Characters of unknown nationality
- M. Bison
- Nash (In Street Fighter V only, actual birthplace is the United States of America)
- G (Birthplace listed as the Earth itself)
- Cycloid Beta
- Cycloid Gamma
- Victor Ortega