Special Skill from Codemaster753 (Galina@Welchlink.welch.jhu.edu)
This code works best with a six-button controller but it will work with three-button controllers. To activate a character's special skill, press all the buttons in the punch column or the kick column.
Example: if you press all the kick buttons at the same time with the ninja assassin she will turn black and she will be invincible plus her hits will deliver more damage.