Play as Storm Trooper:
Beat game with Han Solo.

Play as Bike Scout:
To do this you must have the Storm Trooper. At the fighter select screen highlight the Storm Trooper then press and hold L1 and tap X.

Play as Jodo Kast:
Play Survival mode and beat 7 of the 10 fighters

Play as Slave Leia:
Beat game on Jedi with Princess Leia

Play as Mara Jade:
Put the difficulty on Jedi and highlight Team Mode. Next push and hold L1+L2+R1. Now press X and your teams will be chosen for you. Beat the other team and Mara Jade will be released.

Level select on Vs Mode:
Beat the game using Chewbacca

Super Deformed:
Hold Select + Up + X after choosing your character, and continue to hold until the match starts.

Tiny Mode:
Hold Select + Up + X + R2 after choosing your character, and continue to hold until the match starts.

Eliminate Power Bars:
At the match loading screen press and hold L1+R2+Select until the match starts.

Big Head Mode:
Hold select while choosing your fighter and hold until match starts

Alternate Outfits:
While at the fighter select screen highlight the fighter you want and hold L1 then press X.