Unlock Most Characters
From the main menu holding R1 and R2, press Square, Triangle, Square, Triangle.
Next, release R1 and R2, then hold L1 and L2, press Right, Up, Right, Up. Finally,
let go of L1 and L2, then press L3 and R3. The game will make a noise if you enter
the cheat correctly. Most characters will be unlocked. (except for Hyuuga, Hanabi,
and Yondaime (Hokage 4)
Play As Demon (Kyubi)
To play as a character's demon (kyubi), hold R1 and press O to choose the character.