Bonus characters:

     Enter  these  codes  a  your  first  name  in  career mode. Enter
anything  you  want as your last name. Choose No when you are asked to
save. The name is case-sensitive.

First name:          Play as: 
Big John             John McCarthey 
Smile                Card Girl 
Chop                 Karate Fighter 
Sasuke               Ninja Fighter 
Mask                 Pro-Wrestler 
Kung-Fu              Kung-Fu Fighter 
Punch                Kick Boxer 

     Enter  these codes a your hometown in career mode. Choose No when
you are asked to save. The name is case-sensitive.

Hometown:            Play as: 
OCTAGON              Ulti-Man 
CIRCLE               Sumo Wrestler 
STREET               Street Fighter 
MAT                  Amateur Wrestler 

Super fighter:
     Enter  the  first  name "best" and the last name "buy" in carrear
mode to get 999 skill points. This code is case sensative. Hints:

Secret Character:
     Play  the UFC mode and win with an player created fighter and you
will get Bruce Buffer.

Get Ultiman:
     Win  "CHAMPIONSHIP  ROAD"  with  all 22 fighters and you will get
ULTIMAN. He's the guy on the UFC logo.

Get Big John McCarthey:
     Pass  the  Championship mode with a player created player and get
the Referee John McCarthey.

Get Card Girl:
     Beat UFC Mode (Silver Belt) with all 22 fighters to get Card Girl.

Dragon mask and pro-wrestling style:
     Just  beat  UFC  mode  with  Frank  Shamrock and you can create a
player  with  pro-wrestling  style  and even have your create a player
that wears a mask

Get Bruce Buffer as referee:
     Hold  down  L and R during match loading screen. Now you will see
Bruce  Buffer  introduce  the  fighters  and  he is the referee in the
match.

Cut opponents life by half:
     To give your opponent half the life, hold the L trigger and the R
trigger  when  Bruce Buffer is introducing the match. Then press start
while  still  holding the triggers and your opponent will have half of
his life. Does not work in the exhibition and the tornament.