Here are some cheats and tips for the game Best Of The Best: Championship Karate.
Super Kumate fighter:
Enter 2RHT255457K as a password for a fighter with 99% in every
attribute. Defeat Ivanov and enter Kumate. Select the “Pad Vs SNES”
option until both characters appear to be identical. Defeat your
fighter’s twin. All opponents from the regular tournament will now
appear in the Kumate.