Gotenks moves:
Kamikaze ghost: Half circle back, Half circle foward, Circle.
Super saiyan 3: Half circle back, Half circle foward, Square.

Extra Fighters (JAP ver.):
At the title screen, press Up, Triangle, Down, X, Left, L1, Right, R1.

Power-up:
Hold Square or Circle until the power bar under the health is all the way up.

Kid Buu:
Once you have unlocked Majin Buu, complete the game two times with him. Then, play three more battles and win the first two, but lose on the third.

Super Sayin 3 Goku:
Successfully complete the entire game with Goku. Start another game and win once. Lose the next match then you will have Super Sayin 3 Goku.

Captain Ginyu: Easy win:
When playing as Captain Ginyu, let the CPU beat you up until your health is low then perform the Damage Body Change (Back, Half Circle Back). If It hits your opponent you will switch bodies. Note: When you switch, your opponent can still switch bodies with you.

Frieza: Long Rang Explosive Breaker:
Press Half Circle Back, Half Circle Forward, Circle.

Gogeta: Special moves:
Press Down, Right, Forward and Gogeta will shoot three large fireballs. Note: This requires a lot of energy.

Press L1 or R1 then press Circle, Square, or X to teleport and hit your opponent. Note: The timing must be precise.

Press Left, Down, Right(2), Down, Left, Square.

Gogeta: Dash special moves
When playing as Gogeta you can do two special moves while dashing (holding R1 or L1). While holding R1 or L1, press Square or X and Gogeta will fade out, reappear, and attack. Note: This requires some aim and practice, but is useful.

Gogeta: Real Three Fire Ball attack:
Press Left, Right, Down, Up, Circle. This can be done in the air.

Gogeta: Three large fireballs:
Press Half Circle Forward, Half Circle Forward, Circle.

Gogeta: Hyper move:
Press Half Circle Forward, Half Circle Back, Square.

Goku: Combo:
Press Half Circle Back, Half Circle Forward, Square.

Goku: Instant Transmission Kamehameha:
Press Half Circle Back, Half Circle Forward, Circle.

Goku SS3 Super Flip Attack:
Press Up, Down, Left, Right, Square, X.

Vegeta: Fireball
Press Up, Down, Circle to summon a fire ball in front of Vegeta. Do this in the air directly above your enemy and it will still connect and hurt your opponent.

Unlocking bonus characters:
To fight and unlock bonus characters, use one of the kids (Kid Trunks, Gotenks, Goten, Gohan) to fight.