At the title screen, press Up(2), Down(2), Left, Right, Left, Right, X, A to unlock Zeno and Dufort.

At the title screen, press Up(2), Down(2), Right, Left, Right, A, X to unlock Zeno and Dufort in Story mode.

Defeat 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:

Play as Laila and Albert

Enter "UCKAHEIT" as a password to unlock Laila and Albert. Alternately, buy all Event cards in Bonus mode.

Buy Red Card No. 37 "Vamoon" in Bonus mode to unlock the Castle stage.

Buy Red Card No. 35 "Tsuaoron" in Bonus mode to unlock the China Temple stage.

Buy Yellow Card No. 138 "Mikoruo Ma Zegaruga" in Bonus mode to unlock the Dr. Nazonazo's stage.

Buy Red Card No. 36 "Belgim E O" in Bonus mode to unlock the Egyptian stage.

Buy Red Card No. 72 "Umagon" in Bonus mode to unlock the Forest stage.

Buy Red Card No. 59 "Victoreem" in Bonus mode to unlock the London stage.

Buy Red Card No. 38 "Demoruto" in Bonus mode to unlock the Moon Tower stage.

Buy Yellow Card No. 172 "Baberuga Gurabidon" in Bonus mode to unlock the River Side stage.

Buy Green Card No. 318 "Saigo No Kissu (Last Kiss)" in Bonus mode. At the character selection screen, highlight Reira/Arubeiru and press R.

Defeat Kido in any Story mode to unlock him.

Buy all Spell cards in Bonus mode to unlock Koko.

Collect all Event cards to unlock Laira.

Defeat Li-En in Story mode to unlock him.

Win Time Attack mode 300 times to face Maestro. Defeat him to unlock him as a selectable character.

Buy all Spell cards in Bonus mode to unlock Milordo-Z.

Buy all Mamodo cards in Bonus mode to unlock Mohawk Ace.

Defeat Dr. Riddles in any Story mode to unlock him.

Successfully complete Time Attack mode with any character to unlock Ponygon. Getting the powered up version of a character helps. To get the powered up version of Brago and Sherry, after defeating Brago and Sherry in Zeno's story, go to the park. Defeat powered up Brago/Sherry, who are encountered randomly. Then, successfully complete Zenos story to unlock powered up Brago/Sherry. Afterwards, use powered up Brago in Time Attack mode against normal opponents, and not the powered up version if you have it. On the final level you should fight Ponygon. Defeat him to unlock him. Ponygon has no spells. If you try to use one, a "?" will appear on his head.

Buy all Mamodo cards in Bonus mode to unlock Victoream.

Defeat Wonrei in Story mode to unlock him.

Successfully complete Zatch's Story mode to unlock Zeon and Deufo as selectable characters.

Buy Red Card No. 66 "Brago VS Zofis" in Bonus mode to unlock Zofis/Coco.

Successfully complete Zatch's Story mode. Then, go back into his story and go to the park to fight a powered up Kido. He is not very difficult, but he counters frequently.

In Kanchome's Story mode, defeat Ponygon at the Park. Then, go to the Quarry and Folgore should say "Look, a Mamodo!". You will then fight a powered up Tia. Tia is the easiest powered up character to get.

In Wonrei's Story mode, defeat Zatch at London Suburbs, then go to Fairywoods to fight a powered up Wonrei. Powered up Wonrei is fast, but besides that is easy to defeat.

In Kanchome's Story mode, defeat Ponygon at the Park. Then, immediately go to the river bed to fight a powered up Zatch. He is semi-difficult.

When you defeat Ponygon at Fairywoods in Zatch's Story mode, go back and Zatch should say, "Hey, who are you?". You will then fight a powered up Zeno. If you lose, you can go back. Note: This battle is very difficult.

Successfully complete Powered Up mode in Time Attack. To get Powered Up mode, defeat powered up Zatch.