Note: This game is also titled Konjiki No Gashbell: Yuujou Tag Battle 2.
Play as ZenoAt the title screen, press Up(2), Down(2), Left, Right, Left, Right, X, A to unlock Zeno.
Play as Zeno in Story modeAt the title screen, press Up(2), Down(2), Right, Left, Right, A, X to unlock Zeno in Story mode.
Password optionDefeat the first ten opponents in Zatch Bell's story line to unlock the "Password" option under the Bonus section. Enter one of the following passwords to active the corresponding cheat function:
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Play as Laila and Albert
Enter "UCKAHEIT" as a password to unlock Laila and Albert.
Obtain Red Card No. 37 "Vamoon" to unlock the Castle stage.
China Temple stageObtain Red Card No. 35 "Tsuaoron" to unlock the China Temple stage.
Dr. Nazonazo's stageObtain Yellow Card No. 138 "Mikoruo Ma Zegaruga" to unlock the Dr. Nazonazo's stage.
Egyptian stageObtain Red Card No. 36 "Belgim E O" to unlock the Egyptian stage.
Forest stageObtain Red Card No. 72 "Umagon" to unlock the Forest stage.
London stageObtain Red Card No. 59 "Victoreem" to unlock the London stage.
Moon Tower stageObtain Red Card No. 38 "Demoruto" to unlock the Moon Tower stage.
River Side stageObtain Yellow Card No. 172 "Baberuga Gurabidon" to unlock the River Side stage.
Alternate Reira/ArubeiruObtain Green Card No. 318 "Saigo No Kissu (Last Kiss)". At the character selection screen, highlight Reira/Arubeiru and press R1.
Defeat Kido in any Story mode to unlock him.
Play as LairaCollect all Event cards to unlock Laira.
Play as Li-EnDefeat Li-En in Multiplayer mode to unlock him.
Play as MaestroWin Time Attack mode 300 times to face Maestro. Defeat him to unlock him as a selectable character.
Play as Milordo-ZCollect all Spell cards to unlock Milordo-Z.
Play as Mr. RiddlesDefeat Mr. Riddles in any Story mode to unlock him.
Play as VictoreamCollect all Mamodo cards to unlock Victoream.
Play as WonreiDefeat Wonrei in Multiplayer mode to unlock him.
Play as Zeon and DeufoSuccessfully complete Zatch's Story mode to unlock Zeon and Deufo as selectable characters.
Play as Zofis/CocoObtain Red Card No. 66 "Brago VS Zofis" to unlock Zofis/Coco.