Yu - Gi - Oh ! GX - Episode 166 " Armed Dragon Versus Destiny End Dragoon " , known as " Armed Dragon Versus Dragoon D - END ! " in the Japanese version , is the one hundred and sixty - sixth episode of the " Yu - Gi - Oh ! GX " anime . It first aired in Japan on December 19 , 2007 . The episode was never dubbed , but became available to the world with official subtitles via Crunchyroll on September 13 , 2016 . Summary . Mike , the television producer , runs an elaborate ad campaign advertising a Duel between Aster and Chazz . Aster is made to claim that he dislikes that Chazz ' s popularity as the pro Duelist " Ojamanjoume " is growing , and wishes to Duel him with their pro careers on the line . Ojama Yellow watches the preview of this on TV and says it ' s completely wrong . Chazz questions Mike ' s intentions , and Mike states that the public wanted to know the truth about Aster ' s retirement , so he simply played that up during the commercial , commenting it took a lot of money to make such edits . They move to the balcony , and Mike comments that Chazz ' s fans would gladly scramble for a piece of trash dropped from it . Chazz ' s popularity has skyrocketed as Mike builds a television campaign around him . Emeralda sends Chazz a note , which details Aster ' s current whereabouts . In a small town , Aster plays with young children outside a school , and Emeralda reveals that Aster donates almost all of the money he makes Dueling to charity , to aide fellow orphans like himself . She also shows him pictures that the security camera took the night that the briefcase with the " Ultimate D Card " disappeared . They show Mike sneaking into the warehouse and making off with the case . He had done so to discredit Aster , as Aster had not wished to go along with Mike ' s plans of Dueling for comedy instead of victory . She reveals that Mike has threatened to buy this school and demolish it if Aster does not participate in a faux Duel with Chazz - during which Aster will lose purposely . Pretending to be oblivious to Mike ' s plans , Chazz meets with him and the latter tells him they will have Aster lose to him on purpose , with Mike commenting that there ' s no way Chazz could defeat Aster on his own . The Duel will take place at Duel Academy , and Chazz tells Mike he does not wish to mess this up , so he wants Mike to give him specific instructions via headset during the Duel . The day of the Duel , Syrus Truesdale and Tyranno Hassleberry attempt to get Jaden Yuki to come watch it , but he declines . When he gets back to his room , he finds Chazz in the rafters , who states that he needs to depend Jaden for something , and describes this as the biggest request of his lifetime . At the arena , the Duel is set to begin , with Mike instructing Aster to give it his all until otherwise instructed . Aster Summons " Destiny Hero - Dreadmaster " early on , and reduces Chazz ' s Life Points to 1600 , as Chazz plays defense with his " Masked Dragons " . Jaden arrives at Mike ' s room to find Emeralda already inside . Chazz had requested that Jaden find the " Ultimate D Card " and return it to Aster . By her own accord , Emeralda has opted to do the same thing . However , the card isn ' t in the room , so they determine Mike must have it on him . At the Duel , Chazz Summons two copies of " Armed Dragon LV5 " , and reduces Aster to 1000 Life Points with them , then evolving them into two copies of " Armed Dragon LV7 " . With that , Aster comments that Chazz has become an opponent worthy of defeating , but Mike chooses this time to end the serious Dueling , and insists Aster now lose . At this point , the lights in the arena go out and Jaden sneaks up behind Mike , breaking a bag of Pharaoh ' s fleas over the man ' s head . Itching horribly , Mike strips to his undergarments , scratching furiously , revealing the card hanging around his neck . Jaden shows the card to the President of the Senrigan Group and reveals to the crowd that Mike orchestrated Aster ' s retirement from the beginning . Jaden throws the card to Aster , and the Senrigan Group ' s president tells him there ' s no longer a reason to retire , as the card has returned . Mike refuses to go down without a fight , claiming that Chazz was his accomplice the whole time , as Chazz " swindled " the crowd by pretending to be weak just to get laughs . Jaden urges him to prove he ' s not weak and show them all his true strength . Chazz removes his costume , revealing his signature black uniform underneath and claims he ' s not " Ojamanjoume " but " Manjoume Thunder " ( the English version of previous episodes changed this to his catchphrase of " Chazz it Up ! " , as it is more or less an untranslatable pun on Chazz ' s name and on Japanese honorifics ) . As Mike is lead away by the Senrigan Group ' s security detail , Chazz and Aster resume their Duel , with both giving it their all . Using " Destiny Hero - Plasma " equipped with Chazz ' s " Armed Dragon LV7 " and the " D - Chain " card , Aster reduces Chazz ' s remaining Life Points to 100 . He plays " D - Acceleration " , wishing to use it to end the Duel , but Chazz hangs on by activating his face - down " Level Bond " , Special Summoning " Armed Dragon LV7 " from his Graveyard . Aster then plays " Polymerization " , fusing " Destiny Hero - Plasma " with " Destiny Hero - Dogma " to Fusion Summon " Destiny End Dragoon " , the aforementioned " Ultimate D Card . " Chazz Summons " Armed Dragon LV10 " and hopes to use its effect to discard a card and destroy Aster ' s " Destiny End Dragoon " , but said card is immune to all Monster , Spell and Trap effects . Chazz attacks , destroying both monsters , and Aster reveals that he can revive " Destiny End Dragoon " during his own turn by removing a Destiny Hero in his Graveyard from play . Chazz states he ' ll just defeat Aster this turn , then . He Summons " Ojama Yellow " from his Graveyard using the effect of the " Ojamarking " he discarded and goes so far as call " Ojama Yellow " the " ace card " of his Deck . He activates his face - down " Pride Shout " , allowing a monster with 0 ATK to inflict damage to the opponent equal to its DEF if it successfully attacks directly . This reduces Aster ' s Life Points to zero , and Chazz wins . Almost as soon as the Duel ends , Chancellor Sheppard starts receiving phone calls , with various corporations wishing to sponsor Chazz as he furthers his Pro League career . Aster walks off , and states that he ' ll return this loss to Chazz on another date , but urges him to respond to the crowd that ' s supported him . Featured Duel : Chazz Princeton vs . Aster Phoenix . The Duel is organized by Mike , so Chazz and Aster must comply with any orders he gives them . Turn 1 : Aster Aster draws " Clock Tower Prison " and subsequently activates it . Now during each of Chazz ' s Standby Phase s , " Clock Tower Prison " will gain a Clock Counter . If four or more Clock Counters are on " Clock Tower Prison " , all Battle Damage to Aster is reduced to 0 . If " Clock Tower Prison " is destroyed while having four Clock Counters or more on it , Aster can Special Summon " Destiny Hero - Dreadmaster " . Aster Set s a card . He then activates " D - Spirit " to Special Summon " Destiny Hero - Dread Servant " ( 400 / 700 ) in Attack Position . The effect of " Dread Servant " then activates , placing a Clock Counter on " Clock Tower Prison " . It now has a total of one . Aster Normal Summon s " Destiny Hero - Diamond Dude " ( 1400 / 1600 ) in Attack Position . Aster then activates the effect of " Diamond Dude " to check the top card on his Deck . If it is a Normal Spell Card , he can show it to his opponent and activate its effect on his next turn from the Graveyard ; if not , the card goes to the bottom of his Deck . Aster reveals " Destiny Draw " , so Aster sends it to the Graveyard . Turn 2 : Chazz Chazz draws . During Chazz ' s Standby Phase , the first effect of " Clock Tower Prison " activates . It now has a total of two Clock Counters . Chazz Normal Summons " Masked Dragon " ( 1400 / 1100 ) in Attack Position . " Masked Dragon " attacks " Diamond Dude " , causing both monsters to be destroyed in a Double KO . The effect of " Masked Dragon " activates , letting Chazz Special Summon a second " Masked Dragon " ( 1400 / 1100 ) in Attack Position . " Masked Dragon " attacks " Dread Servant " , but Aster activates his face - down " Eternal Dread " to place two Clock Counters on " Clock Tower Prison " . " Masked Dragon " then destroys " Dread Servant " , but Aster takes no Battle Damage . Since " Dread Servant " was destroyed by battle and sent to the Graveyard , its second effect activates , letting Aster destroy " Clock Tower Prison " . The final effect of " Clock Tower Prison " activates , letting Aster Special Summon " Destiny Hero - Dreadmaster " ( ? / ? ) in Attack Position . The first effect of " Dreadmaster " then activates , letting Aster Special Summon " Dread Servant " ( 400 / 700 ) and " Diamond Dude " ( 1400 / 1600 ) from his Graveyard in Attack Position . Due to the last effect of " Dreadmaster " , its original ATK and DEF become equal to the total ATK of all other " Destiny Hero " monsters that Aster controls ( " Dreadmaster " : ? → 1800 / ? → 1800 ) . Chazz sets three cards . Turn 3 : Aster Aster draws " Destiny Hero Defender " . Through the effect of " Diamond Dude " , Aster activates the effect of " Destiny Draw " from the Graveyard , letting him draw two cards ( " D - Chain " and " Destiny Hero Celestial " ) . Aster ’ s hand contains " Defender " , " D - Chain " , " D - Acceleration " , and " Celestial " . Aster Normal Summons " Destiny Hero - Celestial " ( 1600 / 1400 ) in Attack Position ( " Dreadmaster " : 1800 → 3400 / 1800 → 3400 ) . " Dreadmaster " attacks and destroys " Masked Dragon " ( Chazz 4000 → 2000 ) The effect of " Masked Dragon " activates , letting Chazz Special Summon a third " Masked Dragon " ( 1400 / 1100 ) in Defense Position . " Diamond Dude " attacks and destroys " Masked Dragon " . The effect of " Masked Dragon " activates , letting Chazz Special Summon " Armed Dragon LV3 " ( 1200 / 900 ) in Defense Position . " Celestial " attacks and destroys " Armed Dragon LV3 " . " Dread Servant attacks directly ( Chazz 2000 → 1600 ) . Chazz activates his face - down " Direct Border " to draw a card since he took Battle Damage from a monster with at most 1000 ATK . Also while " Direct Border " is face - up , monsters with 1000 or more ATK can ’ t attack directly . Aster Sets a card . Turn 4 : Chazz Chazz draws " Ojama Yellow " and subsequently Normal Summons it ( 0 / 1000 ) in Attack Position . He then activates his face - down " Level Soul " to Tribute " Ojama Yellow " and remove from play " Armed Dragon LV3 " from his Graveyard in order to Special Summon " Armed Dragon LV5 " ( 2400 / 1700 ) in Attack Position . Chazz then activates " Level Copy " to target " Armed Dragon LV5 " and Special Summon another " Armed Dragon LV5 " ( 2400 / 1700 ) in Attack Position . The two " Armed Dragon LV5 " attack and destroy " Dread Servant " and " Diamond Dude " ( Aster 4000 → 2000 → 1000 ) ( " Dreadmaster " : 3400 → 1600 / 3400 → 1600 ) . Chazz Sets a card . On Chazz ’ s End Phase , he activates the last effect of his two " Armed Dragon LV5 " to send them to the Graveyard in order to Special Summon two copies of " Armed Dragon LV7 " ( 2800 / 1000 ) in Attack Position . At this point , Mike tells Aster that he must lose the Duel , however the lights go out and Jaden smashes a bag of fleas above Mike , causing him to scratch uncontrollably . Jaden then reveals to the Senrigan Group that Mike stole the final D - Card in order to force Aster to retire and that he orchestrated this plan from the beginning . Mike is removed by the security and Jaden returns the final D - Card to Aster . Turn 5 : Aster Aster draws " Destiny Hero - Plasma " . He then Normal Summons " Destiny Hero - Defender " ( 100 / 2700 ) in Defense Position . Aster then Tribute s " Dreadmaster " , " Defender " , and " Celestial " in order to Special Summon " Destiny Hero - Plasma " ( 1900 / 600 ) in Attack Position . Aster then activates the first effect of " Plasma " to equip an " Armed Dragon LV7 " to it and increase the ATK of " Plasma " by half the ATK of " Armed Dragon LV7 " ( " Plasma " : 1900 → 3300 / 600 ) . Aster then activates his face - down " D - Chain " , equipping it to " Plasma " and increasing its ATK by 500 ( " Plasma " : 3300 → 3800 / 600 ) . Now if " Plasma destroys a monster by battle and sends it to the Graveyard , Chazz will take 500 damage . " Plasma " attacks and destroys " Armed Dragon LV7 " ( Chazz 1600 → 600 ) . The effect of " D - Chain " activates ( Chazz 600 → 100 ) . Aster activates " D - Acceleration " to destroy all Equip Cards on " Plasma " ( " Plasma " : 3800 → 1900 / 600 ) and halve the ATK of " Plasma " ( " Plasma " : 1900 → 950 / 600 ) in order to allow " Plasma to attack again . " Plasma " attacks directly , but Chazz activates his face - down " Level Bond " to Special Summon " Armed Dragon LV7 " ( 2800 / 1000 ) from his Graveyard in Attack Position , ignoring the summoning conditions by letting Aster draw two cards ( " Destiny Hero - Dogma " and " Polymerization " ) . A replay occurs , and Aster opts not to attack . Aster then activates " Polymerization " to fuse " Plasma " with " Dogma " in order to Fusion Summon " Destiny End Dragoon " ( 3000 / 3000 ) in Attack Position . Turn 6 : Chazz Chazz draws " Armed Dragon LV10 " . He then Tributes " Armed Dragon LV7 " in order to Special Summon " Armed Dragon LV10 " ( 3000 / 2000 ) in Attack Position . Chazz then activates the effect of " Armed Dragon LV10 " to send one card from his hand to the Graveyard ( " Ojamarking " ) and destroy all face - up monsters Aster controls , however " Destiny End Dragoon " is not destroyed as it can ’ t be destroyed by card effects . " Armed Dragon LV10 " attacks " Destiny End Dragoon " , causing both monsters to be destroyed in a Double KO . Chazz then activates the effect of " Ojamarking " from his Graveyard , removing it from play in order to Special Summon " Ojama Yellow " from his Graveyard ( 0 / 1000 ) in Attack Position . " Ojama Yellow " attacks directly . Chazz then activates his face - down " Pride Shout " to inflict damage to Aster equal to the DEF of " Ojama Yellow " ( Aster 1000 → 0 ) . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .