- For other uses, see: Doma (disambiguation)
Doma is an ancient organization, which tried to take over the world using the Orichalcos.
It has been lead by Dartz, who also controls the company Paradius, which aids Doma. Since Doma is unnamed in the English anime, it is a common misinterpretation that Doma is simply the Japanese version name for Paradius.
|Dartz|| Creator of the Organization, loses his soul in the Duel against Yami Yugi/Seto Kaiba. Called "Master Dartz" by some employees.
|Alister|| Joined the organization after his brother was killed (kidnapped in the English dub); plays a Gorlag/Machine Deck. Duels Seto Kaiba twice, lost his soul in the second Duel against Seto Kaiba.
|Valon|| Joined the organization after being held captive in a detention center; plays a brutally rough Armor Deck, Duels Duke Devlin and Rebecca Hawkins in a 2-on-1 duel, then Dueled Joey Wheeler; lost his soul in the Duel against Joey Wheeler.
|Rafael||Joined the organization after losing his family in a shipwreck; plays a Guardian Deck. Duels Yami Yugi twice (winning and losing) and Dueled Mai once; lost his soul when enraged against Dartz.|
|Mai Valentine||Joined the organization to get rid of Joey Wheeler and get stronger.|
|Gurimo|| Joined the organization for unknown reason(s); appears in the first 2 episodes of the season.
|Rex Raptor|| Joined the organization in thirst for power after witnessing Rafael beat Yami.
|Weevil Underwood|| Joined the organization for the same reasons as Rex Raptor.
|Bikers||Kidnaps Professor Hawkins, and attacks Yugi when they go to see Pegasus.|
|Orichalcos Possessed Police Officers||Attacks Téa and Tristan|
In the present day, Dartz hired Raphael, Alister and Valon as his swordsmen and used them to trap people's souls using "The Seal of Orichalcos". This was to awake the Orichalcos God named The Great Leviathan. The members eventually realized that Dartz had actually caused all the incidents to encourage members to join.