Kaijudo originates from the word "kaijū", meaning monster or strange monster, and "dō", or "the way." Therefore, "Kaijūdō" means "the way of the monster." The term "Kaijudo" is not used in Japan.
In the Duel Masters anime, the Kaijudo Code listed below is not used. A kaijudo duel in the anime is a duel where the creatures actually materialise around the players during the duel when they are played.
In the original Japanese of the anime, they are referred to as True Duelists who are able to bring their cards to the physical plane from the creature world. A duel involving the True Duelists is called a Duel of Truth. These duels are used by members of the Fua Duelists to help obtain the Duel Masters Proof for Zakira. The Duel Masters Proof is guarded by the Duel Masters, a group of powerful duelists.
The Kaijudo code is a set of morals that were created by Wizards of the Coast.
|I make no excuses.||I don't make excuses for a loss|
|My actions are my voice.||How I choose to play is how other players will see me|
|I have no enemies.||My opponent is just another player like myself, and I should be friendly towards them|
|My opponent is my teacher.||Playing with my opponent allows me to become a better duelist.|
|I need no deceitful tricks.||I don't need to cheat.|
|My character is my sword.||I won't become a better duelist by cheating myself and my opponent.|
|I think not of quitting.||I never forfeit.|
|My courage is my secret weapon.||My courage allows me to continue dueling.|
|I know not of defeat.||I keep dueling and learning, whether I win or lose.|
|My experience becomes my strength.||I learn to duel better, win or lose.|