Ready 2 Rumble Boxing: Round 2

Joey T's New Years Costume
Set the Dreamcast's date to January 1st
Referee's St. Patricks Day Leprechaun Costume
Set the Dreamcast's date to March 17th
Lula's Valentine Day Lovers Costume
Set the Dreamcast's date to February 14th
Mama Tua's Easter Bunny Costume
Set the Dreamcast's date to April 23rd
G.C Thunder's Uncle Sam Independence day Costume
Set the Dreamcast's date to July 4th
J.R Flurry's Halloween Skeleton Outfit
Set the Dreamcast date to October 31st
Christmas Costumes
Set the Dreamcast date to December 25th.
Selen Strike will have an Elf costume and Rumbleman will have a Snowman Costume. The ring will also have a snowman design.

Enter these codes at the Character Select screen.

Enter the following codes at the Character Selection Screen:

Enter your gym name as:

In two player mode, press L for the two tier arena, and R for the Championship arena. Press L and R for the gym.