All Djinn
To get all 28 Djinn from the original Golden Sun , use a password or to transfer your file from that game to Golden Sun 2. All 72 Djinn from Golden Sun and Golden Sun 2 can be used to open a sanctuary in the town near the Jupiter Lighthouse, where there is a boss called Dullahan who guards the ultimate summon in the game.
Submitted by Justine. 100% success rate. 

Name Issac's Allies
Select "New Game" and press the following combination of buttons: Up, Down, Up, Down, Left, Right, Left, Right, Up, Right, Down, Left, Up, Select.
Submitted by GR0UD0N. 

Name Felix's Allies
At the naming screen, press Select, Select, Select. You should hear a ding noise. If you don't, press Select until you do.
Submitted by GR0UD0N. 

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