Yu - Gi - Oh ! GX - Episode 013 " Monkey See , Monkey Duel " , known as " Release of the Wilderness ! SAL Duel " in the Japanese version , is the thirteenth episode of the " Yu - Gi - Oh ! GX " anime . It first aired in Japan on December 29 , 2004 and in the US on October 27 , 2005 . Summary . At a lab in the middle of the forests surrounding Duel Academy , alarms are sounding . Men run through the halls , loading rifles with tranquilizer darts . One of their test subjects is escaping - a monkey outfitted in partial robotic suit , and armed with a Duel Disk . Chazz has packed his bags , and plans to leave Duel Academy for good . He exits the building and walks off . Later , Syrus rushes to inform Jaden , who is disappointed that his rival has gone . Chazz ' s former friends begin laughing , and show their true colors . Jaden and Syrus sneak out of class to go find Chazz , and end up meeting Alexis , Mindy and Jasmine outside , who also want to find him . As they search through the forest , the monkey from earlier jumps from the bushes , grabs Jasmine , and runs off . The men from the lab are following the monkey , who takes Jasmine to the edge of cliff . Jaden ' s group and the lab workers corner him there . Who appears to be the head scientist explains the monkey is a test subject named Wheeler , who ' ve they ' ve trained as a Duelist . One of the other lab workers remind him that such information is top - secret . Jaden challenges the monkey to a Duel in order to get him to release Jasmine . The monkey seems to agree to the terms , and the Duel begins . Since he released Jasmine , one the lab men moves to shoot him with the tranquilizer rifle , but the head scientist stops him , saying that they should be able to gather interesting data from the Duel . Jaden begins by Summoning " Elemental HERO Sparkman " in Attack Position . Wheeler Summons " Berserk Gorilla " , who destroys " Sparkman " ; he then Set s a card to end his turn . Jaden plays " Polymerization " , fusing " Elemental HERO Avian " and " Elemental HERO Burstinatrix " to Fusion Summon " Elemental HERO Flame Wingman " , who attacks and destroys " Berserk Gorilla " . Between the Battle Damage and monster effect , Wheeler loses 2100 LP . The head scientist believes that Jaden shouldn ' t underestimate Wheeler , but has different reasons for doing so between the versions . Wheeler continues , Summoning " Acrobat Monkey " and activating his face - down " DNA Surgery " , with him choosing to turn all face - up monsters into Beast - Type s . " Acrobat Monkey " and " Flame Wingman " visibly morph into more bestial , animal - like forms . Wheeler then plays " Wild Nature ' s Release " , increasing " Acrobat Monkey ' s " ATK by its DEF , for a total of 2800 . He attacks and destroys " Flame Wingman " . " Acrobat Monkey " is also destroyed via " Wild Nature ' s Release " . As Jaden begins his turn , he notices a large group of monkeys nearby , watching the Duel and realizes that Wheeler fled the lab to return his friends . Wheeler confirms this , but Jaden must continue the Duel to save Jasmine . He Summons " Elemental HERO Clayman " , who morphs into a Beast - Type due to " DNA Surgery " . Jaden then plays " Courageous Charge " , pay ing 1000 LP on order to select a monster with less than 1000 ATK . He selects " Clayman " , whose DEF will now also be deducted from the opponent ' s LP should he inflict Battle Damage . He attacks directly , winning the Duel . Wheeler runs over to Jasmine , and deposits her back down in front of the group . The scientists proceed to try to recapture Wheeler , and Jaden intervenes , wishing for the monkey to remain with it ' s friends . They ignore him , and the head scientist even states he plans to take all the monkeys back to the lab and make them test subjects as well . One of them aims his tranquilizer rifle , but before he can fire , Pharaoh appears out of nowhere and jumps on the man ' s head . Professor Banner is close behind . After he threatens to expose their project and have them arrested for animal cruelty , they let the monkeys go . Banner then reveals that Chazz is fine , but has left Duel Academy on his family ' s yacht . Featured Duel : Jaden Yuki vs . Wheeler . Turn 1 : Jaden Jaden draws " Elemental HERO Sparkman " and subsequently Normal Summon s it ( 1600 / 1400 ) in Attack Position . Turn 2 : Wheeler Wheeler draws " Berserk Gorilla " and subsequently Normal Summons it ( 2000 / 1000 ) in Attack Position . " Berserk Gorilla " attack s and destroy s " Sparkman " ( Jaden : 4000 → 3600 LP ) . Wheeler Set s a card . Turn 3 : Jaden Jaden draws " Polymerization " and subsequently activate s it to fuse " Elemental HERO Avian " and " Elemental HERO Burstinatrix " to Fusion Summon " Elemental HERO Flame Wingman " ( 2100 / 1200 ) in Attack Position . " Flame Wingman " attacks and destroys " Berserk Gorilla " ( Wheeler : 4000 → 3900 LP ) . Since " Flame Wingman " destroyed a monster by battle and sent it to the Graveyard , its effect activates , inflicting damage to Wheeler equal to his destroyed monster ' s ATK ( Wheeler : 3900 → 1900 LP ) . Turn 4 : Wheeler Wheeler draws . He then Normal Summons " Acrobat Monkey " ( 1000 / 1800 ) in Attack Position . Wheeler activates his face - down " DNA Surgery " and declare s Beast for its effect . Now all face - up monsters must become the Type Wheeler declared as long as " DNA Surgery " is face - up . Wheeler then activates " Wild Nature ' s Release " to increase the ATK of " Acrobat Monkey " by its DEF ( " Acrobat Monkey " : 1000 → 2800 ATK ) until the End Phase , at which point it will be destroyed . " Acrobat Monkey " attacks and destroys " Flame Wingman " ( Jaden : 3600 → 2900 LP ) . At the End Phase , " Acrobat Monkey " is destroyed . Turn 5 : Jaden Jaden draws " Courageous Charge " . He then Normal Summons " Elemental HERO Clayman " ( 800 / 2000 ) in Attack Position . He then activates " Courageous Charge " to pay 1000 LP ( Jaden : 2900 → 1900 LP ) and select " Clayman " for its effect . Now when " Clayman " inflicts Battle Damage to Wheeler this turn , Wheeler will take damage equal to the DEF of " Clayman " . " Clayman " attacks directly ( Wheeler : 1900 → 1100 LP ) . The effect of " Courageous Charge " activates ( Wheeler : 1100 → 0 LP ) . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .