- GOLD CLASS BOXERS:
IN CHAMPIONSHIP MODE, ENTER YOUR NAME AS "MOSMA!". EXIT CHAMPIONSHIP AND ENTER ARCADE FOR NAT DADDY.
- SILVER CLASS BOXERS:
IN CHAMPIONSHIP MODE, ENTER YOUR NAME AS "RUMBLE_BUMBLE". EXIT CHAMPIONSHIP AND ENTER ARCADE FOR BRUCE BLADE.
- BRONZE CLASS BOXERS:
IN CHAMPIONSHIP MODE, ENTER YOUR NAME AS "RUMBLE_POWER". EXIT CHAMPIONSHIP AND ENTER ARCADE FOR KEMO CLAW.
- FIGHT AS LEPRECHAUN:
AT CHARACTER SELECT PRESS X+L+R.
- SECRET ARENAS:
ENTER ARCADE 2-PLAYER MODE, THEN AT CHARACTER SELECT HOLD THE BUTTONS LISTED THEN SELECT YOUR BOXER.
| HOLD BUTTONS / SET DATE | |
| TWO-TIER ARENA | HOLD L |
| CHAMPIONSHIP ARENA | HOLD R |
| GYM RING | HOLD L+R |
| OUTDOOR RING | HOLD X+L+R |
| HALLOWEEN MODE | SET INNER CLOCKS DATE TO "OCT 31" |
| CHRISTMAS MODE | SET INNER CLOCKS DATE TO "DEC 25" |