Here are some cheats and tips for the game Real Bout Fatal Fury Special.
Fight as Geese:
Highlight the sound test selection on the options screen
and press Left + A to unlock a “Soft Dip”
option. Use this new option and set its value to 11111110.
Then, return to the character selection screen, highlight Billy
and press Start. Alternatively, complete the game without
using any continues, highlight Billy on the character selection
screen, and press Start.
Fight as Iori:
Highlight the sound test selection on the options screen
and press Left + A to unlock a “Soft Dip”
option. Use this new option and set its value to 11111110.
Then, return to the character selection screen, highlight Krauser
and press Start. Alternatively, complete the game without
using any continues, highlight Krauser on the character selection
screen, and press Start.