To unlock 5 additional characters, press UP, Triangle, DOWN, X, LEFT, L1, RIGHT, R1 at the title screen. If entered correctly, the title should read: "Dragon Ball Z: Ultimate Battle 27"!

To play as Super Saya-jin X3, finish the game with Gokou on any level. Then play a second game, defeating the first foe but intentionally losing to the second. Choose Gokou again to continue the game. He has been transformed into Super Saya-jin X3!