These codes are for the japanese version.You can try them on the american version also, but if anything happens you can't blame me.
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 doge the attack, and this also leaves the oppenent open.
Alternate Costumes
To wear alternate costumes, go to Training Mode or 2P Mode and simultaneously push SQUARE, X, CIRCLE while selecting a character.
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.
Goku's Spirit Bomb
To use the spirit bomb chose regular Goku and go into battle. Press: Forward, Back, Down, Up, then Triangle. Goku will hold his hands over his head and charge up. This will take up half your ki power and only hurts bad guys (Piccolo but not Vegeta.)
Play as Bebi Vagita (the Final Boss)
To play as Super Bebi, hold Select and press Square at the character select screen, and hold until the match begins. When the match starts, you should be playing as Super Bebi.
Play as Gogeta (Goku and Vegeta fused)
To play as Gogeta you must beat the game on hard 20 times. After that, Gogeta should become a playable character.
Play as SS4 Goku in the American Version
At the title screen, press Triangle 5 times and Square 9 times.
Play as Super Bebi
Press select and square while choosing fighter
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 Gokou4. After that go to 2p mode and pick Gokou4 as 2p and pick whoever you want as 1p.
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.
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.
Sound Test
To enable Sound Test, press L1, L2, R1, R2 then Start at the title screen.
Unlock all characters except the final boss (Japanese Version)
At the title screen press: Right, Left, Down, Up, Right, Left, Down, Up. If done correctly you will hear a sound. Then press triagle 9 times and X 11 times after that you will hear the same sound.
Wire Frame
For wireframe characters, hold SELECT while choosing a fighter
08th MS Team 
