King of Fighters '99 Cheats (PlayStation)

Highlight the survival mode option, then hold Start + Triangle and press Circle.

At the character selection screen in team versus or single versus modes, highlight the
random character icon. Then, hold Select and press Circle, X, Triangle, Square. Krizalid
will appear below the random character icon. Note: Highlight any character, then hold
Start and press Square, Circle, X, Triangle, Square in the Japanese version of the game.

At the character selection screen, highlight the normal version of one of the following
fighters, then hold L1 and press any button:

  Evil Rugal Berstein 
  '95 Kyo 
  Real Bout 2 Terry Bogard 
  Real Bout 2 Andy Bogard 
  '94 Joe Higashi 
  '94 Ryo Sakazaki 
  '94 Robert Garcia 
  '94 Yuri Sakazaki 
  Evil Yashiro Nanakase 
  Evil Shermie 
  Evil Chris 
  Real Bout 2 Mai Shiranui 
  Real Bout Bout 2 Billy Kane