Play as Victoream and Mohawk Ace:
Buy all Mamodo cards in bonus mode.
Play as Laila and Albert:
Enter UCKAHEIT as a password.
Alternately, buy all Event cards in bonus mode. To unlock Leila and Albert (waking), purchase all Partner cards in bonus mode.
Play as Milordo-Z and Koko:
Buy all Spell cards in bonus mode.
Castle stage:
Buy Red Card number 37 "Vamoon" in bonus mode.
Egyptian stage:
Buy Red Card number 36 "Belgim E O" in bonus mode.
Forest stage:
Buy Red Card number 72 "Umagon" in bonus mode.
Play as Zeon and Deufo:
Complete Zatch story mode to unlock Zeon and Deufo as selectable characters.
Play as Dr. Riddles and Kido:
Defeat Mr. Riddles and Kido in any story mode.
Play as Wonrei and Li-En:
Defeat Wonrei and Li-En in story mode.
London stage:
Buy Red Card number 59 "Victoreem" in bonus mode.
Play as Zeno and Dufort in story mode:
Press Up(2), Down(2), Right, Left, Right, A, B at the title screen.
China Temple stage:
Buy Red Card number 35 "Tsuaoron" in bonus mode.
Play as Maestro:
In the Japanese version, win Time Attack mode 300 times to face Maestro. Defeat him to unlock him as a selectable character.
Play as Zofis and Coco:
Buy Red Card number 66 "Brago VS Zofis" in bonus mode.
Play as Zeno and Dufort:
Press Up(2), Down(2), Left, Right, Left, Right, A, B at the title screen.
Play as Alternate Reira and Arubeiru:
Buy Green Card number 318 "Saigo no Kissu" in bonus mode. Then, press R1 when selecting Reira and Arubeiru at the character selection screen.
River Side Stage:
Buy Yellow Card number 172 "Baberuga Gurabidon" in bonus mode.
Moon Tower Stage:
Buy Red Card number 38 "Demoruto" in bonus mode.
Password mode:
Defeat the first ten opponents in Zatch Bell's story line to unlock the password option in the Bonus section.
Dr. Nazonazo's stage:
Buy Yellow Card number 138 "Mikoruo ma Zegaruga" in bonus mode.
