Select exhibition mode and press the following combinations at the particular screen:
All courts: hold L, press Up, Down, Up, Down, Left(2), Right(2)
All characters and costumes: hold L and press Left, White, Right, White
Pit Of Hell court: hold R and press X(6), Y(6), White(6)
Warehouse court: hold L and press Up, X(2), Y(2), Down
Maximum stats: hold R and press Left, White, Right, White
Beating Token: hold L and press White(3)
Big heads: Hold L and press B, A, B, Y
Big chests: Hold L and press B, Up(2), B, Y