Beat arcade mode with Chewbacca on the Jedi difficulty and have the change character on continue option off
Stormtrooper
Beat the arcade mode using Han Solo on Jedi difficulty and the change character on continue option turned off
Slave Leia
With the difficulty on Jedi and the change character on continue option turned off, beat arcade mode
Darth Vader
With the difficulty on Jedi and the change character on continue option turned off, beat arcade mode
Mara Jade
With the difficulty on Jedi, hold L1 + L2 + R1 while entering team mode. Defeat all opponents in this mode
7/6/2003
Invisible Lightsaber
First, choose Luke Skywalker. Then, during a match, perform his lightsaber move with a full super gold force bar. Before the lightsaber returns back to him, while its still in the air, press R2 twice or as many times as it takes until you see the lightsaber re-attached to his belt. When the next time the lightsaber returns to his hand, it will become invisible. Note: When Luke Skywalker's hand move or attacks, all you could see are the tracers form by the lightsaber.