Yu - Gi - Oh ! ARC - V - Episode 012 " Battle Under the Big Top " , known as " DDD : King of the Different Dimension " in the Japanese version , is the twelfth episode of the " Yu - Gi - Oh ! ARC - V " anime . It first aired in Japan on June 29 , 2014 and in Canada on October 16 , 2015 . It became available with official subtitles via Crunchyroll on November 15 , 2016 . Summary . Skip recaps that with the score at 1 - 1 , the third match of the LID vs You Show Duel School best of three match began . Helping them out , Gong endured the violent onslaught of the LID Synchro user , Kit Blade . And without backing down , as Gong ' s use of " Superheavy Samurai Soulbang Cannon " is retold , he ended it in a draw . Skip had assumed they ' d be in the clear since LID didn ' t win , but LID Director Henrietta Akaba demanded a tiebreaker to settle the score . Though frustrated about the situation , they of course , sent out Yuya . But instead of their Fusion user , Julia Krystal , facing Yuya , it was . . . Declan and Yuya stare each other down . Behind Yuya , Ally whispers that Yuya put his goggles on , and Frederick wonders what ' s wrong with him . Tate simply murmurs " big brother Yuya . " ( in the dub , Ally calls Yuya a nervous wreck , while Frederick and Tate muse that if Yuya loses , LID will take You Show ) Gong admits to having realized his own cowardice ( in the dub , Gong begs Yuya to forgive him ) ; if he had won his Duel with Kit , he could have prevented putting such needless pressure on Yuya . Taking a bite from a chocolate bar , Sora comments that he doesn ' t know about that , much to Frederick ' s surprise . He notes that it looks like Yuya ' s not under any pressure at all and he ' s ready to fight ( in the dub , Sora also says Yuya is as cool as a penguin on an iceberg ) . Yuya notes that " this " is the real final match . He ' ll definitely win and protect You Show Duel School , and his father ' s Dueling ( Yuya does not mention his father in the dub ) . Gong and Ally voice their support ( in the dub , only Tate says LID better watch out ) , with Frederick adding that they ' ve got Pendulum Summon ing on their side . Ally states that there ' s no way Pendulum Summoning will lose . Skip looks down proudly from the operator ' s box as Tate states that Yuya will definitely win , but Henrietta interrupts , wondering about that ( in the dub , Henrietta calls the children naive ) . They don ' t seem to how strong Declan is . Skip recognizes the name in surprise . Declan remarks that that ' s enough cheering for now , isn ' t it ? ( in the dub , Declan says the time for talk is over ) For now , he ' d prefer them to be silent and watch their Duel . Skip looks through information on his Duel Disk , and he finds what he feared . Declan and Yuya adjourn to the Duel Field . Declan remains impassive , but Yuya is visibly angered . Ally clings to Zuzu and admits that it ' s scary . Zuzu privately agrees , it ' s not like Yuya at all , though Gong believes that Yuya ' s just concentrating on his match ( in the dub , Zuzu reassures Ally it will be okay , while Gong believes that Yuya can take on Declan ) . Zuzu isn ' t convinced , and she gets a look of determination on her face . She tells Yuya to laugh , reminding him that You Show Duel School is about fun and entertaining Duels , and to smile . Yuya smiles , and he agrees . Bright and fun entertainment is his motto . He declares that he ' ll show it to them , the best entertainment and the best Duel . His friends cheer . Henrietta wonders how long he ' ll be able to keep smiling ( in the dub , Henrietta says she cannot wait to see the grin wiped off of Yuya ' s face ) . Yuya asks Declan what he wants for the Action Field , but Declan simply replies that Yuya can choose whichever he wants . Smiling , Yuya raises his hand towards Skip , who knows that Yuya is counting on him again . But if Declan is " the " Declan Akaba , then he ' s a Duelist who has the qualifications to be a Pro . It may seem underhanded , but he ' s going to protect the Duel School by giving them Yuya ' s best field . Telling Yuya to show them the best entertainment on the best field for it , Skip activates the Action Field Spell Card , " Acrobatic Circus " . The beams of light from the Solid Vision generator align themselves , and multiple floating balls , poles surrounded by platforms , and other circus - related structures appear in a darkened room lit with colored lights . Yuya and Declan stand on the edges of a sun shaped blue and purple mat . Sora observes excitedly that it ' s the circus , and Gong explains that the field is Yuya ' s forte . He tells Skip that his manly spirit is supporting Yuya ( in the dub , Sora comments that the only thing missing on this field is clowns ; Gong replies that Yuya has that part covered , since this field is his specialty ) . Satisfied , Skip sits down , believing that he ' s done all he can for Yuya . The rest is up to him . Yuya thanks Skip , and turns back to Declan , stating that living up to expectations is what it means to be an entertainer . He ' ll show them all an amazing Duel . Yuya happily activates his Duel Disk . " Duelists locked in battle ! " Zuzu cheers . " Kicking against the earth and dancing in the air alongside their monsters ! " Tate continues . " They storm through this Field ! " Frederick adds . " Behold ! " Ally cries . " This is the newest and greatest evolution of Dueling ! " All four cheer " ACTION ! " as the Action Card s explode into the field , and Declan and Yuya finish the statement with a cry of " DUEL ! " ( in the dub , Zuzu announces that You Show has chosen its champion ; Tate and Frederick declare that Declan is taking on You Show ' s star student , Yuya ) Yuya lets Declan go first , as thanks for letting Yuya pick the stage . Declan seems confused , repeating the words , but then realizes that this is how Yuya thinks ( in the dub , Declan says Yuya ' s offer tells him a lot about what kind of a competitor Yuya is ) . Yuya is confused at the statement , but doesn ' t get time to dwell on it as Declan accepts Yuya ' s offer and begins his turn . He declares that he ' s activating three Spell Card s from his hand , and activates the first one , the Continuous Spell Card , " Dark Contract with the Gate " . It will inflict 1000 damage to Declan during his own Standby Phase . Yuya , Zuzu and Gong are all shocked at the effect , but Declan reveals that , additionally , he can add a Level 4 or lower " D / D " monster from his Deck to his hand once per turn . His Duel Disk ejects a card , " D / D Cerberus " . Frederick is confused by the English anagram , and Sora explains that it stands for " Different Dimension , " which refers to an alternate plane . Declan then activates " another " " Dark Contract with the Gate " , which will thus result in him taking 2000 damage during his next Standby Phase . However , once again , Declan can add a Level 4 or lower " D / D " monster from his Deck to his hand , and this time he chooses " D / D Lilith " . Then he activates the third Spell Card , another Continuous Spell Card called " Dark Contract with the Swamp King " . Like the others , it also inflicts 1000 damage to Declan during his own Standby Phase . Yuya observes that now it ' s up to 3000 damage , and he wonders just what Declan ' s trying to accomplish with this many LP at risk . " King of the Swamp " appears behind Declan as he explains that " Dark Contract with the Swamp King " allows him to Fusion Summon without using a Fusion Spell card ( technically not true - " Swamp King " itself acts as the Fusion Spell in this situation ) . Both Sora and Yuya are shocked as Declan fuses his " D / D Cerberus " and " D / D Lilith " from his hand , the monsters appearing above him as he holds up the cards and he chants " Hellhound which bares its fangs , seductress of dark night ! In whirlpool of light from the realm of the dead , become one and give birth to a new King ! " The monsters vanish into the Fusion vortex as Declan declares " Fusion Summon ! Be born , D / D / D Flame King Genghis ! " A warrior - like fiend wreathed in fire appears , with 2000 ATK . Yuya is amazed , and Gong declares that Declan is a Fusion user . Zuzu points out that Declan took a huge risk just to Summon that one monster , while the group takes note that the monster is a " D / D / D " monster , wondering what that means . But Sora doesn ' t tell them , as he ' s floored by the Fusion Summon . Isn ' t this completely different ? he asks himself . " Could this be the real . . . but . . . " he muses ( in the dub , Sora has a bad feeling about Declan ' s monster ; if that monster is as strong as it is terrifying , Yuya will be in trouble ) . Skip scans the reports on Declan - there ' s no record of him using Fusion Summons in his previous Duels , and since he showed such overwhelming strength without them , this may mean he ' s become even stronger . He wonders if Yuya can win . Henrietta just smiles . Declan Set s the last two cards in his hand , ending his turn . Yuya is surprised , but Declan simply adjusts his glasses and he smiles . Ally is furious at his attitude , and Frederick points out that Declan ' s just a substitute for LID ' s fourth player , does he think this will be a walkover ( in the dub , Frederick wonders why Declan did not Duel in the best out of three Duel match if he was this powerful ) . Sora admits that it could happen ( in the dub , Sora says Declan could just be overconfident ) , assuming that Declan risked 3000 damage just because he underestimated Yuya . Gong is particularly offended , calling it a disgrace to Duelists everywhere ( in the dub , Gong says Declan ' s Deck should be demolished for this act ) . The group encourage Yuya to win , with Frederick telling Yuya to shiver Declan into a pulp . Yuya thanks them , but what will really make Declan shiver is his Entertainment Dueling . Yuya runs and leaps into the air as he begins his turn and draws a card . He Summons " Performapal Whip Snake " . and lands on a platform with it . Yuya activates its effect , which lets him switch the ATK and DEF of " Genghis " . " Whip Snake " swings the charm on its tail , hypnotizing " Genghis " , and the large monster drops its massive sword as its ATK becomes 1500 . Ally and Tate cheer that the ATK of " Genghis " went down and now " Whip Snake " can destroy it , while Frederick gets his " shivers . " Yuya declares his Battle Phase and attacks with " Whip Snake " . Declan responds immediately with a Continuous Trap Card , " Dark Contract with the Witch " , which , as Zuzu and Gong are quick to notice , will inflict 1000 damage to Declan during his own Standby Phase , but increases the ATK of all Fiend - Type monsters he controls by 1000 during his opponent ' s turn . Yuya is already leaping for an Action Card as Frederick bemoans that the attack won ' t go through , and " Whip Snake " is pulling itself up short in horror . Landing on another high platform , Yuya activates the Action Card , " High Dive " , which increases the ATK of " Whip Snake " by 1000 until the End Phase . A trampoline appears on the ground , and " Whip Snake " lands on it , bouncing into the air and glowing red as its ATK increases to 2700 . Gong cheers appreciatively , and Ally and Tate declare that it ' s another comeback ( Frederick getting his " shivers " again ; their cheers are cut from the dub ) . Declan has " Genghis " throw him at a ball , and he grabs an Action Card from it , then he leaps onto another , activating his last Trap Card with a smile . The ATK of " Genghis " decreases , and the attack of " Whip Snake " connects , causing an explosion of smoke , and the kids believe Yuya ' s done it , as do the shocked Kit , Julia and Dipper , but Henrietta smiles , and she ' s proven right when " Genghis " is shown to be still standing . " Whip Snake " hops back to Yuya , and everyone wonders what happened in shock . Declan explains that he activated his own Action Card , " Evasion " , negating the attack . Yuya laughs and comments that Declan ' s putting on quite a show ( in the dub , Yuya admits he couldn ' t have done it better himself ) . Skip muses that the two are looking pretty even right now . Zuzu protests that they ' re not , and Gong agrees , reminding them that Declan has four " Dark Contract s " out , and he will take 4000 damage in his next turn . Zuzu points out that if Yuya ends his turn now , he can win . Frederick comments that it ' s pretty anticlimactic , and Tate suggests that it was a mistake in Declan ' s strategy . Sora wonders about that ; he gets the feeling that Declan isn ' t the type of guy to make such a simple mistake , and the fact that the ATK of " Genghis " decreased before the attack of " Whip Snake " was negated has been bothering him ( in the dub , Sora adds that even if Yuya would go for an easy win , he could just walk straight into an enemy trap ) . Skip seems to have noticed it too . Yuya , meanwhile , is looking uncertain , while Declan chuckles slightly . Yuya asks him what ' s so funny , and Declan apologizes , as he was remembering Yuya ' s words before the match . Yuya seems to be a very kind person , but such kindness is useless on the stage of battle . Despite being given the opportunity to win by simply ending his turn , Yuya hesitates , and most likely , that kindness of Yuya ' s is to blame . He asks Yuya just what he can hope to achieve with such naivety . Frederick wonders what Declan ' s talking about , but Gong urges Yuya not to listen , and Ally and Tate encourage Yuya to end his turn . But Yuya instead Sets a Spell Card first , before ending his turn , and the ATK and DEF of both " Genghis " and " Whip Snake " return to normal . He tells Declan to take the 4000 damage from his four " Dark Contracts " , which appear in front of Declan . Declan smiles darkly . " Dark Contracts ? " he asks , " Those measly things . . . " ( " Excuse me ? What ' Contracts ? ' " in the dub ) All four cards explode , to the shock of the onlookers . Declan explains that the " Dark Contracts " were nullified , as he had already activated the Trap Card , " Contract Laundering " , which negated the effects of the " Dark Contracts " , and then destroyed all the affected cards during the End Phase ( in the dub , Declan adds that it ' s true what they say about contracts : they ' re only as good as the cards they ' re written on ) . Sora realizes that this is why the ATK of " Genghis " was reduced . Gong asks if this means that Declan also nullified the 4000 damage that the cards would have inflicted to him . Declan explains further that he can also draw cards equal to the number of destroyed " Dark Contracts " , and thus he draws four new cards . Yuya closes his eyes , admitting that it had been to good to be true , but he wouldn ' t have been happy if he ' d won from that . It would have meant that he couldn ' t have shown off his Entertainment Dueling that everyone had been looking forward to . He explains that it may seem to Declan like a naïve way to think ( in the dub , Yuya says he was glad he did not defeat Declan this turn ) , as Declan adjusts his glasses , but Yuya wants to win with the Entertainment Dueling that was passed down from his father . " With Yusho Sakaki ' s Dueling ? " Declan asks ( " So that you ' re carrying on Yusho Sakai ' s legacy " in the dub ) . Yuya is shocked and asks if Declan knows Yusho . Kit rudely cuts in , pointing out that of course they know him ; Yuya ' s father is famous , after all . As the former champion who ran away , Dipper adds . " SILENCE ! " Declan roars . Kit and Dipper freeze up , and Julia calls them idiots . Declan asks them to pardon his outburst . Of course , Declan is aware of Yusho Sakaki , who pioneered their current Action Dueling . Declan respects him from the bottom of his heart . He declares that he ' ll have Yuya show it to him today , the Entertainment Dueling that he inherited from his father . And in exchange , Declan will have to reveal the full extent of his abilities . Yuya is floored , asking if this means that , up until now . . . Declan declares his turn , drawing and subsequently Summoning the Level 3 Tuner monster , " D / D Nighthowl " . Yuya is shocked , and Gong protests that he can ' t be . Henrietta smiles , replying that oh , but he is ( in the dub , Gong remarks that the monster is a toothed monster , while Henrietta calls the moment perfect ; the real Duel can begin ) . From here on out is the main act . Declan explains that when " Nighthowl " is successfully Summoned , he can Special Summon a Level 4 or lower " D / D " monster from his Graveyard , but its ATK and DEF becomes 0 . He chooses to revive " Lilith " , and the plant - like Fiend emerges from a Graveyard portal in front of Yuya , causing Yuya and " Whip Snake " to leap for a pole in terror , and Declan tunes both the Level 3 " Nighthowl " and the Level 4 " Lilith " . Each monster grabs a trapeze , and they swing back and forth towards each other , releasing their grip when they get close enough to begin the Summon . Declan chants " Howls that tear through the night , with swiftness of a gales give birth to a new king ! Synchro Summon ! Be born ! Level 7 ! D / D / D Gust King Alexander ! " Yuya observes the 2500 ATK Synchro Monster , and the group of onlookers gasp in shock , as Gong realizes that Declan wasn ' t just a Fusion user . But it ' s not over yet - Declan activates the effect of " Genghis " , which activates when another " D / D / D " monster is Special Summoned , allowing him to Special Summon a " D / D " monster from his Graveyard . The flames of " Genghis " become purple , and is raises its sword . Declan revives " Lilith " once again , and additionally activates the effect of " Alexander " , which activates when a " D / D " monster is Special Summoned , allowing him to Special Summon a " D / D " monster from his Graveyard . The aura of " Alexander " and the winds around it intensify , and Yuya looks on in shock as Declan revives " D / D Cerberus " this time . Then Declan overlay s the Level 4 " Cerberus " and " Lilith " , and they become energy swirls and enter the Overlay Network , causing water to erupt from the Network . " In order to subjugate all that resides within this world , descend now onto the peak of the world ! " ( " I promise you ' ve never seen a warrior king as magnificent or commanding as this one " in the dub ) Declan chants as his monster is slowly revealed , green eyes glowing . Zuzu is particularly shocked . " Isn ' t this ? " she asks ( Zuzu ' s reaction is cut from the dub ) . " Xyz Summon ! Be born ! Rank 4 ! Wave King Caesar ! " Declan finishes . " Caesar " appears , standing with 2400 ATK . " Even Xyz Monster s , " Sora gasps ( " He can Summon Xyz Monsters , too ? " in the dub ) . " W - What a guy , " ( " This is rolling Gong ' s mind " in the dub ) Gong admits . The LID students seem shocked that Declan can freely manipulate the Summoning methods that they all specialize in , Henrietta chuckles , and Skip muses that this is Declan Akaba . Declan explains that the title " D / D / D " stands for " Different Dimension Demon , " and he tells Yuya to prepare to taste the power of kings who subjugate alternate planes ( in the dub , Declan warns Yuya that he has not begun to unleash his most powerful monsters ; the worst is yet to come ; it seems terrifying , since the reality is far worse ) . Yuya , with " Whip Snake " wrapped around his wrist , looks at the three powerful monsters and stares Declan down . Featured Duel : Yuya Sakaki vs . Declan Akaba . At the start of the Duel , the Field Spell Card " Acrobatic Circus " is activate d , as per the rules of an Action Duel . It will allow the players to use Action Card s , but they may only have one in their hand at a time . Turn 1 : Declan Declan activates the Continuous Spell Card " Dark Contract with the Gate " . During Declan ' s Standby Phase , he will take 1000 damage ; also , once per turn , he can add 1 Level 4 or lower " D / D " monster from his Deck to his hand . He does this now , adding " D / D Cerberus " . He then activates another " Dark Contract with the Gate " , this time adding " D / D Lilith " to his hand . He activates the Continuous Spell Card " Dark Contract with the Swamp King " . During his Standby Phase , he will take 1000 damage , also , once per turn , he can Fusion Summon a Fiend - Type Fusion Monster using monsters in his hand and on his field as the Fusion Material Monster s . He does this now , fusing " Cerberus " with " Lilith " to Fusion Summon " D / D / D Flame King Genghis " in Attack Position ( 2000 / 1500 ) . Declan Set s 2 cards . Turn 2 : Yuya Yuya Normal Summon s " Performapal Whip Snake " ( 1700 / 900 ) . Yuya activates the effect of " Whip Snake " , switching the ATK and DEF of a face - up monster his opponent controls until the End Phase ( " Genghis " : 2000 → 1500 / 1500 → 2000 ) . " Whip Snake " attack s " Genghis " , but Declan activates his face - down Continuous Trap Card " Dark Contract with the Witch " . During his Standby Phase , he will take 1000 damage , but the ATK of all Fiend - Type monsters he control s will be increased by 1000 during his opponent ' s turn ( " Genghis " : 1500 → 2500 / 2000 ) . Yuya finds and activates the Action Card " High Dive " , increasing the ATK of a monster on the field by 1000 until the end of the turn ( " Whip Snake " : 1700 → 2700 / 900 ) . Declan finds an Action Card . He then activates his face - down " Contract Laundering " , negating the effects of all " Dark Contract " cards in his Spell & Trap Card Zone during the turn a " Dark Contract " card was activated ( " Genghis " : 2500 → 1500 / 2000 ) . Declan then activates the Action Card " Evasion " , negating the attack . Yuya Sets a Spell Card . During the End Phase , the effects of " Whip Snake " and " High Dive " expire ( " Genghis " : 1500 → 2000 / 2000 → 1500 , " Whip Snake " : 2700 → 1700 / 900 ) . The other effect of " Contract Laundering " activates , destroying all " Dark Contract " cards in Declan ' s Spell & Trap Card Zone and letting him draw a card for each destroyed , meaning four . Turn 3 : Declan Declan draws " D / D Nighthowl " and subsequently Normal Summons it ( 300 / 600 ) . As it was Normal Summoned , its effect activates , letting him Special Summon a " D / D " monster from his Graveyard , but its ATK and DEF will be reduced to 0 . He Special Summons " D / D Lilith " ( 100 → 0 / 2100 → 0 ) . Declan tunes the Level 3 Tuner monster " Nighthowl " with the Level 4 " Lilith " to Synchro Summon " D / D / D Gust King Alexander " ( 2500 / 2000 ) in Attack Position . As a " D / D / D " monster was Special Summoned , Declan activates the effect of " Genghis " , letting him Special Summon a " D / D " monster from his Graveyard . He Special Summons " D / D Lilith " . As a " D / D " monster was Special Summoned , Declan activates the effect of " Alexander " , letting him Special Summon a " D / D " monster from his Graveyard . He Special Summons " D / D Cerberus " ( 1800 / 600 ) . Declan overlay s his two Level 4 monsters to Xyz Summon " D / D / D Wave King Caesar " ( 2400 / 1200 ) in Attack Position . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .