Successfully complete the indicated task to unlock the corresponding character:
| Chumley Huffington | Successfully complete Story mode with Kagemaru. |
| Professor Banner | Successfully complete Story mode with Kagemaru. |
| Mindy | Successfully complete Story mode with Zane Truesdale. |
| Aster Phoenix | Successfully complete Story mode with Zane Truesdale. |
| Bastion Misawa | Select the 'UMD Recognition' option with Yu-Gi-Oh! GX Tag Force or Yu-Gi-Oh! GX Tag Force 2. |
| Axel Brodie | Successfully complete Story mode with Zane Truesdale. |
| Tyranno Hassleberry | Successfully complete Story mode with Zane Truesdale. |
| Paradox Brother (Para) | Successfully complete the game with Yasmine. |
| Adrian Gecko | Successfully complete Story mode with Jaden Yuki. |
| Jaden (S3) | Successfully complete Story mode with Jaden (S4). |
| Jim Crocodile Cook | Successfully complete Story mode with Zane Truesdale. |
| Normal duelists (Dean, Loggy, Swin, Kami, etc.) | Successfully complete Story mode. |
| Paradox Brother (Dox) | Successfully complete the game with Mindy. |
| Fujiwara | Overcome Fujiwara ten times in Free Duel mode. |
| Atticus Rhodes | Successfully complete Story mode with Zane Truesdale. |
| Syrus (Ra Yellow) | Successfully complete Story mode with Syrus (Obelisk Blue). |
| Syrus (Slifer Red) | Successfully complete Story mode with Syrus (Obelisk Blue). |
| Kagemaru | Successfully complete Story mode with Blair (Silfer Red). |
| Jasmine | Successfully complete Story mode with Zane Truesdale. |
| Jinzo | Successfully complete Story mode with Zane Truesdale. |
| Obelisk Blue Chazz Princeton | Successfully complete Story mode with Chazz (black uniform). |
| Jesse Andersen | Successfully complete Story mode with Zane Truesdale. |
| Trueman | Successfully complete Story mode with Jaden (S4). |
| Camula | Successfully complete Story mode with Zane Truesdale. |
| |
| Dark Magician Girl and Sadie | Select the 'UMD Recognition' option with Yu-Gi-Oh! GX Tag Force two times. |
| Titan | Successfully complete Story mode with Zane Truesdale. |
| Vellian Crowler | Successfully complete Story mode with Zane Truesdale. |
| Damon | Successfully complete Story mode with Zane Truesdale. |
| Fonda Fontaine | Successfully complete Story mode with Zane Truesdale. |
| Nightshroud | Successfully complete Story mode with Zane Truesdale after defeating Nightshroud. |
| Obelisk Blue Blair and Season 1 Blair | Successfully complete Story mode with Blair Slifer (red). |
| Sartorius | Successfully complete Story mode with Blair (Silfer Red). |
| |
| Yubel | Successfully complete Story mode with Jaden (S4). |
Go to the store, and talk to the cashier. Answer 'Yes' when she asks if you would like to shop around. When the booster pack menu appears, press Up(2), Down(2), Left, Right, Left, Right, X, O to unlock the Midday Constellation Booster Pack.
