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Brron, Mad King of Dark World serves as the first main antagonist of the Dark World arc of season three. He makes his first actual appearance in episode 135 when Jaden travels to his stronghold.

Demented and sadistic, Brron leads the denizens of the Dark World army as its vile king. Although his role in the anime is brief, his actions are vital in Jaden Yuki's transformation into the Supreme King of the alternate dimension.


In the dub, Brron's voice is high-pitched and he has a witch-like cackle probably to assert the fact that he is the mad or insane king of Dark World.



Being the leader of the Dark World army, Brron was responsible for the deplorable state of the dimension he and his kin were send towards and the oppression of its other stranded denizens. His right-hand man, Zure, oversaw Brron's will, detaining anyone who defied them at internment camps while killing duelists who could be threats to him. The executions occurred at his fortress and involved releasing monsters at disarmed duelists while Brron himself and his minions watched the spectacle. After learning of Jaden's presence in his domain, Brron orchestrated a plot in the creation of the ultimate Duel Monsters card, Super Polymerization, using the rift between him and his friends.

Due to an underhanded maneuver by his top subordinate, Zure, Brron had a clear advantage with his set of "Wicked Rune" cards because should one of them be activated one of Jaden's friends would be sacrificed. Eventually, Jaden defeated Brron in a fit of rage, but not before Alexis Rhodes, Chazz Princeton, Atticus Rhodes and Tyranno Hassleberry were all sacrificed. Only Syrus Truesdale managed to avoid that fate. After his defeat, Brron mocked Jaden by saying that he would never see his friends again before dying. It was later revealed that Brron was simply one of Yubel's pawns, who used him to complete the integral part for her plan, the creation of the "Super Polymerization" card, and to simultaneously coax Jaden towards his descent into darkness as the Supreme King.

Non-canon appearances

Brron, Mad King of Dark World appears in Yu-Gi-Oh! World Championship 2008 in a Tag Team with Reign-Beaux, Overlord of Dark World as his tag partner. He also appears as an unlockable opponent in Free Duel mode in Yu-Gi-Oh! 5D's World Championship 2009: Stardust Accelerator.




Brron plays a Dark World Deck, evil creatures whose latent abilities are activated when they are discarded by a card effect. He mainly focused on the gathering of the "Wicked Rune" cards which grants Brron access to his most powerful monster, "Colorless, Chaos King of Dark World", Summoned through the card, "Super Polymerization", although the Colorless card is not actually seen due to the fact that Brron could not offer Syrus through "Wicked Rune - Doubt". If the aforementioned strategy fails, Brron focuses on the Summoning and preservation of "Reign-Beaux, Overlord of Dark World".

Video games

World Championship 2008

In Yu-Gi-Oh! World Championship 2008, Brron uses a Dark World Decks titled, Portable Darkness and Sleepless Mind.

Stardust Accelerator

Brron, Mad King of Dark World in Yu-Gi-Oh! 5D's World Championship 2009: Stardust Accelerator.

In Yu-Gi-Oh! 5D's World Championship 2009: Stardust Accelerator, Brron uses a Dark World Deck titled, See My Dark Side.

Duel Links

Brron, Mad King of Dark World appears as a fightable NPC in the GX Chronicles: Yubel.


Opponent(s) Episode(s) Outcome
Jaden Yuki 135-136 Lose



  1. 1.0 1.1 1.2 1.3 1.4 This card can be seen when he searches his Deck to add a "Dark World" monster to his hand via the effect of "Dark Corridor" in episode 136.
  2. 2.0 2.1 This card is mentioned by Brron in episode 136.
  3. This card is sent from his Deck to the Graveyard via the effect of "Wicked Canon" in episode 135.
  4. 4.0 4.1 4.2 This card is sent from his Deck to the Graveyard via the effect of "Wicked Canon" in episode 136.