Yu - Gi - Oh ! GX - Episode 021 " The Duel Off , Part 1 " , known as " Fusion Seal ! Judai VS Misawa ( First Part ) " in the Japanese version , is the twenty - first episode of the " Yu - Gi - Oh ! GX " anime . it first aired in Japan on November 23 , 2005 and in the United States on November 22 , 2005 . Summary . At the docks , a ship is unloading at Duel Academy . A scuba diver sneaks onto the island from the ship and states he ' s going to uncover the school ' s dark secrets . Chancellor Sheppard is having a staff meeting , in which the teachers attempt to decide who will represent Duel Academy in the inter - school match against North Academy . Dr . Crowler insists that there is no reason not to have Zane Truesdale , who also attends the meeting , as their representative just as it was last year . Sheppard reveals that North Academy has chosen a first - year student , so Sheppard wishes to to choose one as well . Zane has no problem with this , and suggests Jaden Yuki for the position . Crowler does not wish for a Slifer Red student , especially Jaden , to represent them , and nominates Bastion Misawa . He suggests that the two Duel to determine who will earn the right to be their representative . The scuba diver has infiltrated the school , and enters a locker room and steals a Slifer Red jacket , intending to use it to blend in with the students . Professor Banner announces the news to Jaden and Bastion during class , and Bastion reveals that he ' s been building an entirely new Deck specifically to counter Jaden ' s Elemental HERO es , and that he ' s nearly finished . The scuba diver wanders the halls , perplexed as to why Obelisk Blue and Ra Yellow students will not speak with him . Jaden meets with him , and assumes that he was held back a few years , as he appears older than a student should . Jaden drag him back to the Slifer dorm , where he rebuilds his Deck for his Duel with Bastion . He drops a " Skyscraper " card , and the diver picks it up , remembering his own past , where it appears he used an Elemental Hero Deck of his own , and suffered a loss to Seto Kaiba . He accidentally lets slip that his name is Gerard after insisting that Jaden cease calling him " old timer " . He then states he doesn ' t like Dueling , leading them to question why he ' s at Duel Academy , and he says he doesn ' t enjoy it because he is not good at it . Chumley Huffington sympathizes with him , having been held back himself , and states that watching Jaden Duel inspired him to do better . Syrus Truesdale suggests that Gerard watch Jaden Duel , hoping this will help inspire him to become better himself . Gerard then attempts to get the information he needs out of them , and asks if they know if the rumors about disappearing students have any truth to them . Jaden asks if he means the Abandoned Dorm , which intrigues Gerard , as he hadn ' t heard of it . This gives him a starting point for his research , and he later ends up outside the Abandoned Dorm , where he meets Alexis Rhodes . He questions her about the missing students , but she advises him to cease his search . She departs , and he pulls out a camera , and begins to take pictures , stating that if he breaks this story , the money he gets from it could set him up for life . At the Ra Yellow dorm , Bastion sits at his computer , still analyzing Jaden ' s Deck . He determines that he needs to stop Jaden from Summoning " Elemental HERO Flame Wingman " and " Elemental HERO Thunder Giant " , which would mean stopping their respective Fusion Material Monsters . Racking his brains , he develops a strategy that would neutralize both threats . The next day , the whole school gathers to watch the Duel , and Gerard determines that with them distracted , this is his ideal time to act . He sneaks into the library , and begins attempting to hack into one of the school ' s computers . At the arena , the Duel begins , with Bastion Summoning " Carboneddon " in Defense Position . Jaden Summons " Elemental HERO Burstinatrix " , using it to attack and destroy " Carboneddon " before Set ting a card . Bastion draws , thinking that the card he drew is the one that will lead him to victory . He Summons " Oxygeddon " and attacks , but Jaden negate s the attack by activating his face - down " Hero Barrier " . Bastion Sets the card he drew and ends his turn . Jaden Summons " Elemental HERO Sparkman " and equip s it with " Spark Blaster " , using its effect to switch " Oxygeddon " to Defense Position . He attacks and destroys it with " Burstinatrix " , which activates " Oxygeddon ' s " effect , dealing 800 damage to both players . Jaden attacks directly with " Sparkman " , reducing Bastion to 1600 LP . This greatly worries Crowler , as he ' s the one who nominated Bastion for this Duel , and he appears to be losing so early on . Bastion Summons " Hydrogeddon " and destroys " Burstinatrix " with it . Since it destroyed a monster in battle , " Hydrogeddon ' s " effect activates , letting Bastion Summon a second copy from his Deck . He then activates " Living Fossil " , Special Summon ing " Oxygeddon " from his Graveyard , though its effect is negated and it ' s ATK decreased by 1000 . He then plays " Bonding - H2O " , Tributing his three monsters to Special Summon " Water Dragon " . Bastion believes that Summoning such a powerful monster will force Jaden to Summon a Fusion Monster - and fall right into Bastion ' s trap . Jaden plays " Polymerization " in an attempt to fuse " Sparkman " with the " Elemental HERO Avian " and " Elemental HERO Bubbleman " in his hand to Fusion Summon " Elemental HERO Tempest " . Bastion activates his face - down " Cursed Seal of the Forbidden Spell " , discarding " Double Spell " in order to negate " Polymerization " and prevent Jaden from playing it again during the current Duel , even if it ' s a different copy . With this , Bastion has sealed off Jaden ' s main method of Summoning his Fusion Monsters . Featured Duel : Jaden Yuki vs . Bastion Misawa . Turn 1 : Bastion Bastion draws " Carboneddon " and subsequently Normal Summon s it ( 800 / 600 ) in Defense Position . Turn 2 : Jaden Jaden draws " Elemental HERO Burstinatrix " and subsequently Normal Summons it ( 1200 / 800 ) in Attack Position . " Burstinatrix " attacks and destroy s " Carboneddon " . Jaden then Set s a card . Turn 3 : Bastion Bastion draws " Cursed Seal of the Forbidden Spell " . He then Normal Summons " Oxygeddon " ( 1800 / 800 ) in Attack Position . " Oxygeddon " attacks " Burstinatrix " , but Jaden activate s his face - down " Hero Barrier " to negate the attack as he controls an Elemental HERO . Bastion Sets a card . Turn 4 : Jaden Jaden draws " Elemental HERO Sparkman " and subsequently Normal Summons it ( 1600 / 1400 ) in Attack Position . He then activates " Spark Blaster " and equip s it onto " Sparkman " . Now during each of Jaden ' s Main Phases , he can switch the battle position of a monster . When this effect is used three times , " Spark Blaster " is destroyed . Jaden then activates the effect of " Spark Blaster " to switch " Oxygeddon " to Defense Position . " Burstinatrix " attacks and destroys " Oxygeddon " . Since " Oxygeddon " was destroyed by a FIRE monster in battle and sent to the Graveyard , its effect activates , inflicting 800 damage to both players ( Jaden : 4000 → 3200 LP , Bastion : 4000 → 3200 LP ) . " Sparkman " attacks directly ( Bastion : 3200 → 1600 LP ) . Turn 5 : Bastion Bastion draws " Hydrogeddon " and subsequently Normal Summons it ( 1600 / 1000 ) in Attack Position . " Hydrogeddon " attacks and destroys " Burstinatrix " ( Jaden : 3200 → 2800 LP ) . Since " Hydrogeddon " destroyed a monster by battle and sent it to the Graveyard , its effect activates , allowing Bastion to Special Summon another " Hydrogeddon " ( 1600 / 1000 ) from his Deck in Attack Position . Bastion then activates " Living Fossil " to Special Summon " Oxygeddon " from the Graveyard ( 1800 / 800 ) in Attack Position and equip it with " Living Fossil " . Due to the effect of " Living Fossil " , the effects of " Oxygeddon " are negated and it loses 1000 ATK ( " Oxygeddon " : 1800 → 800 ATK ) . Bastion ' s hand contains " Litmus Doom Swordsman " , " Double Spell " and " Bonding - H2O " . Bastion then activates " Bonding - H2O " to Tribute his three monsters and Special Summon " Water Dragon " ( 2800 / 2600 ) from his Deck in Attack Position . Turn 6 : Jaden Jaden ' s hand contains " Elemental HERO Avian " , " Elemental HERO Bubbleman " , and " Bubble Blaster " . Jaden draws " Polymerization " and subsequently activates it to fuse " Sparkman " , " Avian " , and " Bubbleman " to Fusion Summon " Elemental HERO Tempest " . Bastion , in response , activates his face - down " Cursed Seal of the Forbidden Spell " to negate the effect of " Polymerization " and destroy it by discard ing " Double Spell " . In addition to this , Jaden is forbidden from activating " Polymerization " again for the remainder of the Duel . " Duel continues in the next episode " . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .