Play as Gogeta (A mixture of both Vegeta and Gokuh):
     To  play as Gogeta you must beat the game on hard 20 times. After
that, Gogeta will be on the character select screen..

Play in Super Bebi's level:
     First  beat  the  game  with Gokou then after the credits, at the
title  screen press triangle 5 times and X 9 times then you should get
Gokou  4.  After  that  go  to 2p mode and pick Gokou 4 as 2p and pick
whoever you want as 1 player

Play as SS Gotenks:
     Beat  the game on hard 9 times with Regular TRUNKS. Without dying
and  then  after  you've  done  that,go  to Trunks and push the SELECT
button 9 times

Bonus Fighters:
     At  the  title  screen, press Right, Left, Down, Up, Right, Left,
Down,  Up.  You should hear a sound to confirm the code. Now start the
game and you should have six more fighters.

Play as Goku 4:
     At  the title screen (with Goku on the right and the instructions
for  entering the sound test mode) press Right, Left, Down, Up, Right,
Left,  Down,  Up.  You  should  hear a tone. Next, press Triangle FIVE
times, then press X 9 times. If done correctly another tone will sound
and  the  menu  screen  will now have a cool picture of Super Saiyajin
Level 4 Goku.

Self-Destruct:
     While  playing as Vegeta or Majin Boo, press forward, back, down,
up  and  the  fireball  button  (default  is  triangle)  to  perform a
self-destruct.  This  does  massive  damage  to  your  opponent  if it
connects and takes away about half of your Ki power.

Wire Frame:
     For wireframe characters, hold SELECT while choosing a fighter

Alternate costumes:
     Select  two  player  or  training  mode. Then, press Square + X +
Circle when choosing a character.

Sound test:
     Press  L1,  L2,  R1,  R2, Start at the title screen. Press Select
after  choosing  a  song  to  view  the  lyrics  and  additional  song
information

Extra Fighters:
     At  the  title  screen  press Right, Left, Down, Up, Right, Left,
Down, Up, Start. You will now have several new characters on the Build
Mode Character Select Screen

Be Super Bebi:
     At the character select screen press Select, Square

Be Super Saiyanjin 4 Son Goku:
     After  doing  the  'Extra  Fighters'  code  above go to the title
screen  and  press  Triangle  (10  times),  Square  (9  times). In the
Japanese version press Triangle (5 times), X (9 times)

Using secret powers:
     When  playing as Gokuh (Normal DBGT), Vegeta (SSJ), Majin Boo and
Gogeta  or  Vegetto,  quickly  press Forward, Back, Down, Up, Triangle
(which releases the powers) during a match.

Power Struggle:
     When your opponent does the fireball press triangle , circle, and
square  repeatedly  fast.  then right in the middle of your opponent's
fireball  you  will  do  the  fireball  back  and as you are doing the
fireball, press square alot of times and you will hit your opponent or
he will still hit you if you do not press fast enough.

Goku's Spirit Bomb:
     While  playing  as  the  regular  Goku  only  press the following
buttons press forward, back, down, up and the fireball button (default
is triangle).

Power Struggle:
     When your opponent does the fireball press triangle , circle, and
square  repeatedly  fast.  then right in the middle of your opponent's
fireball  you  will  do  the  fireball  back  and as you are doing the
fireball, press square alot of times and you will hit your opponent or
he will still hit you if you do not press fast enough.

Play as Ubuu:
     First,  put  the  skill  level  on hard. Get Super Saiya-Jin Goku
Level  4 and the rest of the hidden characters. This includes Gotenks.
Note -- You cannot lose a match and you need near perfect when getting
all  the  hidden  characters. Once done, beat the game on hard 7 times
with Majin Buu a.k.a. Original Buu. You need a near perfect doing this
and  no losses. After that's done, beat the game 15 times on hard with
Pan.  You  also  need  a near perfect and no losses here too. Beat the
game 6 more times with Chibi Goku with a near perfect and no losses. 8
more times with SSJ to the 4th power Goku. You also need no losses and
near  perfect  every  match here too. Finally beat the game 3 times on
easy with Majin Buu. On the third time you need to continue 4 times by
losing  to  your  first round opponent. And get a perfect on every one
after  that.  Except  for  when you fight Super Baby. You need to half
your  life bar at 1/4 the way, and finish Super Baby with a strong 'Ki
Attack'  (or  in  other  words  ---- a strong knockout ki blast.' i.e.
Goku's "Chou Kamehameha," but for Buu! After that, go to the character
selection  screen and highlight Majin Buu. When you do that, press the
select button 15 times and Ubuu will appear.

Unlimited power/health:
     At  title  screen,  press  Triangle,  X,  Triangle,  X, Triangle,
Triangle, Square, Square. You will hear a tone confirming that you did
it right

3D dodging:
     When an enemy uses a large attack at close range just hold R1 and
press  down, doesn't matter what side you are on you will quickly move
to  the Right and Completly dodge the attack, and this also leaves the
Oppenent open.

Play as SS4 Goku:
     At the title screen, press Triangle 5 times and Square 9 times.

Move:
     To do Metro Push Over and R2 at the same time as your opponent is
flying  back,  push  Triangle  and X at the same time. You can only us
this move in the air.

Get 7 Super Sayians:
     At  the  tilte  screen press Right, Left, Down, Up twice to get 7
more chacters.

Get SS4 Goku:
     To  get  SS4  Goku  after entering the 7 super sayian code, press
Triangle 5 times and X 9 times at the title screen.

Secret kick:
     Hold  forward  while in front of your opponent and press R2.While
your opponent is flying back press triangel+circle as fast as you can.
Note:You must training this first before beat the game at the training
mode or two player mode.