This game is also available on PS2.
Retro Game Cheats for Knockout Kings 2001 (PlayStation)
Effect: Illegal kick to body
When:
During a match
How:
Press Square, Triangle, Circle and X all at once
Submitted By:
Freeola
Effect: Cyclops
When:
At the name entry screen enter the following to unlock the person named above
How:
EYE
Submitted By:
Unknown
Effect: New Character
When:
Career mode
How:
Enter Name As "FRANCIS"
Submitted By:
Unknown
Effect: PLAY AS ASHY KNUCKS
When:
ENTER AS NAME IN CAREER MODE
How:
Knucks
Submitted By:
Unknown
Effect: Bite Opponent's Ear
When:
During Gameplay
How:
During a match, hold L1 + R1 to clinch your opponent and press Triangle + Circle + X + Square
Submitted By:
Effect: Extra Boxer
When:
In Career Mode
How:
Enter Your Name As "BULLDOG"
Submitted By:
Unknown
Effect: Clown
When:
At the name entry screen enter the following to unlock the person named above
How:
CLOWN
Submitted By:
Unknown
Effect: Gorilla
When:
At the name entry screen enter the following to unlock the person named above
How:
GORE
Submitted By:
Unknown