Yu - Gi - Oh ! 5D ' s - Episode 015 " Welcome to the Fortune Cup " , known as " Duel of Fortune Cup Begins : Major Air Raid ! ! Giant Bomber Air Raid " in the Japanese version , is the fifteenth episode of " Yu - Gi - Oh ! 5D ' s " . It first aired in Japan on July 9 , 2008 . Summary . Preparation . Before the contestants of the Fortune Cup appear at the ceremony , Yusei , Leo , Luna , Dexter , Yanagi and Tanner prepare in a corridor . Leo , now disguised as Luna , in order to participate instead of her , asks how he looks . After getting too excited , Luna kicks him , reminding him she doesn ' t act like that . As Yusei and Leo depart to the ceremony , Yusei advises Leo to lose the make - up . Tanner remains silent , positive the Fortune Cup is a setup . Fortune Cup begins . The MC announces the Fortune Cup is getting started , before Jack Atlas and " Red Dragon Archfiend " entertain the crowd . Jack and Red Dragon stop in the center of the stadium and the contestants rise into the stadium . The audience spots Yusei ' s criminal mark and begin to mutter to each other . Thoughts that Yusei may have stolen an invitation and such are spread among the crowd . Yusei ' s friends are uneasy , but Yusei tells Leo to pay no attention . The MC is left speechless . Greiger walks over to him and takes his microphone and asks everyone , as a duelist up there , what it is everyone sees . He points to Yusei saying he is undoubtedly a duelist , selected under the same conditions as all contestants . Having cards , marker or not , they are all the same , no one there should be ashamed of anything , he assures the crowd , it is rather them , looking at him , through their trivial rose - colored glasses that are no short of vicious . The crowd remains silent until Rex Goodwin applauds Greiger after which everyone follows . Goodwin thanks Greiger and reminds everyone of the equality of the players . The MC announces who will be in the first round as the screens randomly pair up the players . Leo is put in the first Duel against Greiger . Rex and Lazar , now in a box room talk with Zigzix on a monitor . They will shortly have all the Signer s together . Once they get them to Duel at maximum potential , it will cause the Ener - D system to respond . Zigzix has installed a number of D - Sensors throughout the stadium , which will apprehend a full account of a Signer ' s response heightened by the Dueling . As the contestants prepare , Leo tells Yusei to meet him in the finals and recollects on what Yusei told him after their duel . The Duel . The MC announces the contestants Luna and Greiger . As Leo and Greiger shake hands , Leo tells Greiger that he liked his speech earlier . Greiger says that he heard Luna was a girl , he seems like a boy to him . Leo stumbles back laughing protecting his disguise saying people think he ' s a boy , but he ' d say he ' s girl enough as he strikes a more feminine posture . In the crowd , Luna gets angered , saying that she doesn ' t act like that . Leo gets excited as he duels , much to Luna ' s dismay . Greiger wishes his opponent to put up a good fight , even defeat him with the " " Power of the dragon . " " Zigzix is unable to get a reading on his sensor , so he turns up the power . Luna begins to ache as he does this . While Zigzix gets no reaction on his scanners Lazar assures him they have checked that Luna is a Signer . Zigzix informs Lazar , that while he isn ' t getting a response from the field , he is getting a small reaction from the audience . Zigzix manages to pin point the reaction to be coming from Luna . Leo takes much damage from Greiger ' s card effects , but manages to pull off his combo . Leo attacks for apparent victory , but Greiger manages to remains in control and win . Aftermath . After the Duel , Lazar meets with Greiger . He confirms Greiger ' s thought that he was dueling a boy , as he shows him paperwork revealing Luna to have a twin brother . Zigzix asks Goodwin how he is to handle the situation as Goodwin grins at the image of Luna in the audience . Featured Duel : Leo vs . Greiger . Turn 1 : Greiger Greiger ' s hand contains " Damage Summon " , " Trap Reactor ・ Y FI " , " Star Blast " , " Spell Reactor ・ RE " , and " Nobleman of Crossout " . Greiger draws " Summon Reactor ・ SK " . He then activates " Star Blast " to pay 500 LP ( Greiger 4000 → 3500 ) and reduce the Level of " Summon Reactor ・ SK " by one ( " Summon Reactor ・ SK " : Level 5 → 4 ) . Greiger then Normal Summons " Summon Reactor ・ SK " ( 2000 / 1400 ) in Attack Position and Set s a card . On Greiger ' s End Phase , the effect of " Star Blast " expires ( " Summon Reactor ・ SK " : Level 4 → 5 ) . Turn 2 : Leo Leo draws " Morphtronic Celfon " and subsequently Normal Summons it ( 100 / 100 ) in Attack Position . The first effect of " Summon Reactor ・ SK " then activates , inflicting 800 damage to Leo ( Leo 4000 → 3200 ) . Leo then activates the Attack Position effect of " Morphtronic Celfon " to roll a die . Leo gets a two , so he picks up the top two cards of his Deck . Leo finds " Morphtronic Boomboxen " among the picked up cards , so he Special Summon s " Morphtronic Boomboxen " ( 1200 / 400 ) in Defense Position and returns the remaining cards to his Deck . Leo Sets a card . Turn 3 : Greiger Greiger draws " Delta Reactor " . He then Normal Summons " Trap Reactor ・ Y FI " ( 800 / 1800 ) in Attack Position . " Trap Reactor ・ Y FI " attacks " Morphtronic Celfon " , but Leo activates his face - down " Morphtransition " to negate the attack and switch " Morphtronic Celfon " to Defense Position . The effect of " Trap Reactor ・ Y FI " activates , destroying " Morphtransition " and inflicting 800 damage to Leo ( Leo 3200 → 2400 ) . " Summon Reactor ・ SK " attacks " Morphtronic Boomboxen " , but Leo activates the Defense Position effect of " Morphtronic Boomboxen " to negate the attack . Greiger then activates his face - down " Damage Summon " to pay 800 LP ( Greiger 3500 → 2700 ) and Special Summon " Spell Reactor ・ RE " from his hand ( 1200 / 900 ) in Attack Position ( as " Summon Reactor ・ SK " attacked , but its attack target was not destroyed ) . " Spell Reactor ・ RE " attacks and destroys " Morphtronic Boomboxen " . Greiger Sets a card . Turn 4 : Leo Leo ' s hand contains " Morphtronic Magnen " , " Gadget Hauler " , " Magical Mallet " and " Twister " . Leo draws " Factory of 100 Machines " . He then activates the Defense Position effect of " Morphtronic Celfon " to roll a die . Leo gets a three , so he checks the top three cards of his Deck ( " Morphtronic Datatron " , " Gadget Box " , and " Morphtronic Magnen " ) and returns them to the top of his Deck in the order they were originally in . Leo then switches " Morphtronic Celfon " to Attack Position and activates its Attack Position effect to roll a die . Leo gets a one , so he checks the top card of his Deck . It is " Morphtronic Datatron " , so he Special Summons " Morphtronic Datatron " ( 1200 / 600 ) in Attack Position . The first effect of " Summon Reactor ・ SK " activates ( Leo 2400 → 1600 ) . Leo then activates the Attack Position effect of " Morphtronic Datatron " to Tribute " Morphtronic Celfon " and inflict 600 damage to Greiger ( Greiger 2700 → 2100 ) . Leo then Tributes " Morphtronic Datatron " in order to Tribute Summon " Gadget Hauler " ( 1300 / 0 ) in Attack Position . Leo then activates the effect of " Gadget Hauler " to send " Morphtronic Magnen " from his hand to the Graveyard and increase its ATK by 800 ( " Gadget Hauler " : 1300 → 2100 / 0 ) . Leo then activates " Factory of 100 Machines " to remove from play all " Morphtronic " monsters from his Graveyard and increase the ATK of " Gadget Hauler " by 800 ( 200 for each " Morphtronic " monster removed this way ) ( " Gadget Hauler " : 2100 → 2900 / 0 ) . The effect of " Spell Reactor ・ RE " activates , destroying " Factory of 100 Machines " and inflicting 800 damage to Leo ( Leo 1600 → 800 ) . " Gadget Hauler " then attacks " Trap Reactor ・ Y FI " , but Greiger activates his face - down " Delta Reactor " to send his three monsters to the Graveyard and Special Summon " Flying Fortress SKY FIRE " ( 3000 / 2500 ) in Attack Position , ignoring the Summoning Conditions . A replay then occurs and Leo chooses not to attack . On Leo ' s End Phase , the effect of " Factory of 100 Machines " expires ( " Gadget Hauler " : 2900 → 2100 / 0 ) . Turn 5 : Greiger Greiger draws . He then activates the second effect of " Flying Fortress SKY FIRE " to send one card in his hand to the Graveyard and destroy " Gadget Hauler " . " Flying Fortress SKY FIRE " attacks directly ( Leo 800 → 0 ) . Naming conflict . In the Japanese version , the names on Jeager ( Lazar ' s ) files concerning the twins stated their names to be Lua and Luca . Although lineart by Kazuki Takahashi has stated that their names are Rua and Ruka . A later episode , also spelled Rua ' s name as such . The difference is due to common confusion between the letters " L " and " R " among Japanese speakers . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .