Ready 2 Rumble Boxing: Round 2 cheats and cheat codes for Nintendo 64

Michael Jackson:
Highlight the "Survival" option at the main menu, then press 
Left(2 times), Right(2 times), Left, Right, L + R. 

Shaquille O'Neal:
Highlight the "Survival" option at the main menu, then press 
Left(4 times), Right(2 times), Left(2 times), Right, L + R. 


Go to the character selection screen and enter any of the codes bellow.
If the codes are accepted, you should hear a sound.

Undead boxer
Press Left, Up, Right, Down, R(2 times), L.


Faster gameplay
Press Right, Right, Up, Down, Right, R(4 times), L.

Big gloves
Press Left, Right, Up, Down, R, L.

Big head mode
Press Right, Right, Up, Down, Right, R(3 times).

Undead boxer
Press Left, Up, Right, Down, R(2 times), L.

Fat boxer
Press Right, Right, Up, Down, Right, R(2 times), L.

Thin boxer
Press Right, Right, Up, Down, Right, R, L.

Unlockable characters:
Bill Clinton: Finish the game in arcade mode 9 times
Freak E. Deke: Finish the game in arcade mode once
Freedom Brock: Finish the game in arcade mode 6 times
G.C. Thunder: Finish the game in arcade mode 3 times
Hillary Clinton: Finish the game in arcade mode 10 times
Michael Jackson: Finish the game in arcade mode 2 times
Robox Rese-4: Finish the game in arcade mode 8 times
Rocket Samchay: Finish the game in arcade mode 7 times
Shaquille O'Neal: Finish the game in arcade mode 5 times
Wild "Stubby" Corley: Finish the game in arcade mode 4 times
Rumble Man: Finish the championship mode with all characters, after
finish arcade mode in hard mode.

Unlockable outfits:
Unlock the champion outfits. Finish the championship mode
Secret Easter outfit: Modify the system date to April 23, 2001
Secret Halloween outfit: Modify the system date to October 31
Secret Independence Day outfit: Modify the system date to July 4
Secret New Year's outfit: Modify the system date to January 1
Secret St. Patrick's Day outfit: Modify the system date to March 17
Secret Valentine's Day outfit: Modify the system date to February 14
Selene Strike and a snowman outfit for Rumble Man: Modify the system 
date to December 25