Yu - Gi - Oh ! - Episode 005 " The Ultimate Great Moth " , known as " Ultimate Perfect Form , Great Moth " in the Japanese version , is the fifth episode of the " Yu - Gi - Oh ! " second series anime . It first aired in Japan on May 16 , 2000 and in the United States on October 20 , 2001 . When this episode first aired in the United States on " " , it was merged with the previous episode , so the Duel took place in just one episode titled " The Ultimate Great Moth " . The two separate episodes were dubbed , but were only seen in other countries and on DVD and VHS until " 4Kids TV " aired the episodes separately on December 2 and December 9 , 2006 . Summary . Joey , Tristan , and Téa congratulate Yugi on wiping out all of Weevil ' s monsters . Then Mai Valentine shows up to tell them that Yugi doesn ' t have a chance against the National Champion . Weevil attempts to Summon his " Perfectly Ultimate Great Moth " by playing " Larvae Moth " equip ped with " Cocoon of Evolution " saying that in five turns , his " Larvae Moth " will undergo a startling transformation , becoming the " Ultimate Great Moth " . Yugi falls behind and the gang encourage him to not give up . Mai mocks them telling them that their friendship speeches won ' t work . Teá retorts , telling Mai that she doesn ' t know about friendship . Yugi appears to destroy to " Cocoon " , but only stops its evolution one turn early , causing " Great Moth " to be Summoned . Mai thinks the gang ' s not cheering now , Weevil ' s creature is unbeatable . They can chatter from the sidelines all they want , but it won ' t help Yugi one bit . ( Japanese , Mai thinks , " So this is Haga ' s trump card . " She ' s never seen it before . Haga ' s practically won already . Yugi ' s in a tight spot now . ) Yugi thinks Weevil turned the Duel around one more time , but Yugi ' s not giving up yet . He tells Weevil he ' ll find a way to squash that over - sized bug . Yugi manages to dampen the Moth with " Makiu , the Magical Mist " , which in turn powers up his " Summoned Skull " , who attacks with electricity . Yugi attacks , and destroys " Great Moth " , wiping out the rest of Weevil ' s Life Points . The gang cheer Yugi ' s win , while Mai stands with her mouth open . Impressive , she says . She didn ' t think Yugi could ever beat Weevil . ( Japanese , Mai says now she sees how Yugi beat Kaiba . ) Yugi stands over a sniveling Weevil , telling him he won his duels by lying and cheating , but a true champion plays with honor . ( Japanese , Yugi says , who would have thought that the first one to be sent home would be the all - Japan champion ? ) He takes Weevil ' s Star Chips , and Joey relieves Weevil of his dueling glove . ( The word " Retire " is written across Haga ' s " card " in the Japanese version , and his name , " Insector Haga , " is written on the top . ) Yugi has three Star Chips now . But he still needs seven more to gain entry into the castle , where his grandfather is being held prisoner , and he ' ll battle Pegasus once and for all ! Featured Duel : Yami Yugi vs . Weevil Underwood . Weevil has 555 LP remaining and control s no cards . Yugi has 1350 LP remaining and controls " Dark Magician " ( 2500 / 2100 ) in Attack Position , " Torike " ( 1200 / 600 ) Set and no other Set cards . Turn 17 : Weevil Weevil Sets " Larvae Moth " . Turn 18 : Yami Yugi Yugi activate s " Monster Recovery " to return his hand and all monsters he control s ( " Dark Magician " and " Torike " ) to his Deck and draw five cards . Yugi then Normal Summons " Kuriboh " ( 300 / 200 ) in Attack Position , but Weevil activates his face - down " Parasite Worm " to destroy " Kuriboh " and inflict damage to Yugi equal to its ATK ( Yugi : 1350 → 1050 LP ) . Turn 19 : Weevil Weevil draws . He then Flip Summon s " Larvae Moth " ( 500 → 650 / 400 → 520 ) in Defense Position . He then equip s " Larvae Moth " with " Cocoon of Evolution " , making its ATK and DEF equal to that of " Cocoon of Evolution " ( " Larvae Moth " : 650 → 0 / 520 → 2000 → 2600 ) . Weevil can Special Summon " Great Moth " in two turns . Turn 20 : Yami Yugi Yugi Normal Summon s " Gaia The Fierce Knight " ( 2300 / 2100 ) in Attack Position . " Gaia " attack s " Larvae Moth " . The attack fails ( Yugi : 1050 → 750 LP ) . Turn 21 : Weevil Weevil draws , then passes . Weevil can Special Summon " Great Moth " in one turn . Turn 22 : Yami Yugi Yugi draws " Beaver Warrior " and subsequently Sets it . Turn 23 : Weevil Weevil passes . Weevil can Special Summon " Great Moth " at any time during his turn , or Special Summon " Perfectly Ultimate Great Moth " in two turns . Turn 24 : Yami Yugi Yugi draws , then passes . Turn 25 : Weevil Weevil draws , then passes . Weevil can Special Summon " Perfectly Ultimate Great Moth " in one turn . Turn 26 : Yami Yugi Yugi draws . He then Normal Summons " Curse of Dragon " ( 2000 / 1500 ) in Attack Position . Yugi activates " Burning Land " to destroy the Field ( " Larvae Moth " : 0 / 2600 → 2000 ) . " Gaia " attacks and destroys " Larvae Moth " . Upon its destruction , Weevil Special Summons " Great Moth " ( 2600 / 2500 ) in Attack Position , since " Cocoon of Evolution " had been equipped with " Larvae Moth " for four turns . Turn 27 : Weevil Weevil draws . " Great Moth " attacks " Gaia " , but Yugi activates " Polymerization " from his hand to fuse " Curse of Dragon " with " Gaia " and Fusion Summon " Gaia the Dragon Champion " ( 2600 / 2100 ) in Attack Position . A replay occurs , and " Great Moth " attacks and destroys Yugi ' s Set " Beaver Warrior " ( 1200 / 1500 ) . At this point , the poisonous scales of " Great Moth " continually decrease the ATK of " Gaia the Dragon Champion " ( " Gaia the Dragon Champion " : 2600 → 1900 / 2300 ) . Turn 28 : Yami Yugi Yugi draws " Makiu , the Magical Mist " and subsequently activates it . The air is dampened , which stops the ATK of " Gaia the Dragon Champion " from decreasing further . Turn 29 : Weevil Weevil draws . " Great Moth " attacks and destroys " Gaia the Dragon Champion " ( Yugi : 750 → 50 LP ) . Turn 30 : Yami Yugi Yugi draws . He then Normal Summons " Summoned Skull " ( 2500 / 1200 ) in Attack Position . The effect of " Makiu " increases the ATK of " Summoned Skull " by 1000 ( " Summoned Skull " : 2500 → 3500 / 1200 ) . " Summoned Skull " attacks and destroys " Great Moth " ( Weevil : 555 → 0 LP ) . Aftermath . Yami Yugi wins and attains Weevil ' s title as National Champion as well as Weevil ' s two Star Chip s . Joey takes Weevil ' s Dueling Gauntlet , allowing him to officially participate in the Duelist Kingdom tournament . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .