Phoenix Wright: Ace Attorney Unlockables

Have the Game Boy Advance game Gyakuten Saiban in the cartridge slot.

During the Case 5 ending credits on the touch screen, fingerprint powder will blown away. Eventually, a dialogue scene with a character will appear. Tap the touch screen at this time as though applying fingerprint powder to it and blow it off (as done while playing the game) A hidden drawing of that character will appear on the top screen.