Yu-Gi-Oh! - Episode 099

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Yu-Gi-Oh! - Episode 099

デッキマスター 深海の戦士


Dekki Masutā Shinkai no Senshi

Japanese translation

Deck Master - Deepsea Warrior


Isolated in Cyber Space, Part 1

Episode number


Japanese air date

March 19, 2002

English air date

November 8, 2003

Japanese opening


Japanese ending


Episode listing Yu-Gi-Oh! episode listing (season 3)
Previous A Virtual Nightmare
Next Isolated in Cyber Space, Part 2

"Isolated in Cyber Space, Part 1", known as "Deck Master - Deepsea Warrior" in the Japanese version, is the ninety-ninth episode of the Yu-Gi-Oh! anime. It first aired in Japan on March 19, 2002 and in the United States on November 8, 2003.


  • Everyone is dropped through tunnels and wakes up in a virtual world. Kaiba is with Mokuba, and Tristan is with Duke, but everyone else is isolated.
  • Noah sends Gansley to challenge Yugi.
  • Yugi must construct his Deck from scratch by choosing from a supply of virtual cards, and Egyptian God Cards are not in the available database. (This is true for all Duels in this arc.) He also must choose each card wisely because once he chooses a card it remains in his Deck until the end of the Duel.
  • Going through his cards in the search for a Deck Master, Yami Yugi is about to choose Dark Magician, but "Kuriboh" emerges from its card on its own.
    • Yami Yugi protests that he didn't choose "Kuriboh", but Gansley declares that it is set and cannot be changed. Yami Yugi accepts it.
  • Gansley boasts his knowledge of successful business practices (philosophy and warfare in the Japanese version) as he gathers extra monsters and depletes Yami Yugi's reserves.
    • This proves to be more than mere talk when he meets a headstrong attack with his Deck Master ability, saving him and damaging Yami Yugi severely.
  • Duke and Tristan run through a hallway looking for Serenity and they soon realize it is endless. Tristan attempts to break through the walls with an axe.
  • Téa wanders through a wasteland and is attacked by a group of Hitotsu-Me Giants.
  • Kaiba and Mokuba find a virtual door in a forest. Inside the door is an image of the orphanage where they used to live.

Featured Duel: Yami Yugi vs. Gansley

Yugi's Deck Master is "Kuriboh". Gansley's Deck Master is "Deepsea Warrior".

Turn 1: Gansley
Gansley draws a monster and subsequently Sets it.

Turn 2: Yugi
Yugi draws "Obnoxious Celtic Guardian" and subsequently Normal Summons it (1400/1200) in Attack Position. He then Sets a card. "Obnoxious Celtic Guardian" attacks and destroys Gansley's Set monster, which is "Ashingray" (500/500). The Flip Effect of "Ashingray" then activates, forcing Yugi to discard a card ("Exchange"). As "Ashingray" was destroyed by battle the second effect of "Ashingray" activates, letting Gansley Special Summon another copy of "Ashingray" from his Deck (500/500) in face-down Defense Position. Yugi's hand contains "Gazelle the King of Mythical Beasts", "Berfomet", and "De-Spell".

Turn 3: Gansley
Gansley draws "Ipiria" and subsequently Normal Summons it (500/500) in Attack Position. The effect of "Ipiria" then activates, allowing Gansley to draw a card. Gansley then Flip Summons "Ashingray" (500/500). This activates the Flip Effect of "Ashingray" and Yugi discards "De-Spell".

Turn 4: Yugi
Yugi draws "Polymerization" and subsequently activates it to fuse the "Berfomet" and "Gazelle the King of Mythical Beasts" in his hand in order to Fusion Summon "Chimera the Flying Mythical Beast" (2100/1800) in Attack Position. Yugi then activates his face-down "Quick Attack" to allow "Chimera" to attack this turn even though it's a Fusion Monster. "Chimera" attacks "Ipiria", but Gansley activates the Deck Master ability of "Deepsea Warrior" to negate the attack and inflict damage to Yugi equal to the attacking monster's ATK (Yugi 4000 → 1900) by Tributing "Ashingray" and Ipiria".

Duel continues in the next episode.

Differences In adaptations

  • Gansley doesn't introduce himself in the Japanese and the image of the Big 5's face overlaying with that of "Deepsea Warrior" doesn't occur.
  • The rock leaves a small cut on Anzu's face in the Japanese, which is digitized out in the dub when it hits her.
  • In the Japanese episodes through the 3 parts of this Duel, Yugi can understand what "Kuriboh" is saying, whilst in the dub he can not.

Featured cards

The following cards appeared in this episode. Cards in italics debuted here.

Yugi Muto/Yami Yugi


  1. 1.0 1.1 1.2 This card can be seen when he was picking his Deck Master.
  2. 2.0 2.1 2.2 2.3 He picks this card when he was building his Deck.
  3. 3.0 3.1 This card was discarded to the Graveyard due to the effect of "Ashingray".
  4. 4.0 4.1 This card was played as a Magic Card. It was depicted as a Trap Card in the English version. It is a Trap Card in the TCG/OCG.

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