Insector Haga ( manga ) Insector Haga is a character in the " Yu - Gi - Oh ! " manga . This is the original depiction of Haga , known as Weevil Underwood in the English anime . Haga is nicknamed " Insector " for his use of Insect cards . He was the winner of the Japanese National Duel Monsters Championship and has also participated in the Duelist Kingdom and Battle City tournaments . Biography . National Championship . Haga took part in the Japanese National Duel Monsters Championship , where he made it through to the finals , where he faced Dinosaur Ryuzaki . Ryuzaki tried to overpower him with his strong Dinosaur monsters , but Haga defeated him with his combo plays . Pegasus personally awarded Haga the trophy and invited him to the Duelist Kingdom tournament . Duelist Kingdom . Haga met Yugi Mutou for the first time on the boat to Duelist Kingdom . While Ryuzaki acted brash and overconfident , Haga was polite , claiming after Yugi congratulated him on his victory that the win didn ' t mean much , as he couldn ' t Duel Yugi or Kaiba . When Ryuzaki boasted about the fact that he and Haga had luxury rooms after Jonouchi complained about the common room that most of the Duelists had to sleep in . Haga pointed out that in one way , the common room was better than his room , as it allowed players to trade cards and improve their decks , and scope out the competition . He later joined Yugi outside , claiming that he couldn ' t sleep . He requested to see the Exodia cards , and Yugi agreed , thinking that it couldn ' t do any harm as Haga already knew about them . Haga looked at the cards , admitting that he had long thought of a strategy to defeat them , but had been unable to - until now . Revealing his true colours , he threw the cards into the sea . Jonouchi dived after them , forcing his friends to rescue him with the life equipment . Enraged at what Haga had done , Dark Yugi emerged , and vowed to take Haga out first . Haga thought that he ' d like to see Yugi try . On the island , Dark Yugi challenged Haga immediately . Haga saw that Dark Yugi only had a single Star Chip , and wondered if he ' d lost a Duel already ( not knowing that Yugi had given his other Star Chip to Jonouchi ) . He commented that he ' d be able to take Yugi out first . Dark Yugi ordered him to stake both his Star Chips , pointing out that he ' d promised to take Haga out first , putting up his own life to make up the difference . Haga was excited by the twist , and agreed . Having had a special preview of the new rules regarding the field power bonus , Haga thought he had the advantage , expecting the originally evenly matched " Mammoth Graveyard " and " Killer Needle " to end in favour of the field power boosted " Killer Needle " . However , Dark Yugi had already figured out that the fields conveyed advantages , and played his " Mammoth Graveyard " on a zone that gave it its own bonus , ending the first battle in a tie . Haga then began to overpower Yugi , especially when he used " Basic Insect " and " Laser Cannon Armor " to boost his monster to 2600 ATK . He also set a trap that would badly damage Yugi if he attacked , boasting about it as he Summoned more and more Insects . Dark Yugi eventually Summoned " Dark Magician " , and Haga couldn ' t resist the chance to destroy it . Unfortunately for him , Dark Yugi used " Mirror Force " to destroy all of Haga ' s monsters and most of his life points - Haga having previously thought it to be a Spell card . Haga nearly lost his composure , but knew that he still had his trump card . He tricked Yugi into recalling his powerful monsters to set off his trap card at minimal cost , and when Dark Yugi mocked him for telling him about the trap , Haga played his " Cocoon of Evolution " on his " Larvae Moth " , beginning its upgrade to " Perfectly Ultimate Great Moth " . Yugi was initially unable to destroy it , but after Jonouchi urged him to burn down the whole forest if he had to , he burned down the forest with " Burning Land " . Even so , the Cocoon had advanced enough to Summon " Great Moth " . Haga dominated the field , even destroying Dark Yugi ' s Fusion Monster , " Gaia the Dragon Champion " . However , Dark Yugi had used the monster as a decoy , powering up his " Summoned Skull " with " Magic Mist " to destroy the Moth for the win . Haga was horrified at his loss , but when he tried to protest , Dark Yugi angrily threatened him . Jonouchi took his Duel Glove , as he did not have one himself . Battle City . Haga took part in the Battle City tournament . He promised a boy a rare card to help him cheat against Katsuya Jonouchi . He got the boy to steal Jonouchi ' s Duel Disk , sneak a " Parasite Paracide " into his Deck . When Jonouchi recovered his Duel Disk , the boy told him that his own Deck and Duel Disk had been stolen and offered to bring the thief to him . He then went to Haga , who thanked him for his help , but gave him a " Pillroach " instead of a rare card . When the boy protested , Haga sprayed Super Bug Killer in his eyes . Haga planned to beat Jonouchi , which would get Dark Yugi mad enough to face him in another Duel . Anzu Mazaki tried talking Jonouchi out of giving Haga the honor of a Duel , after what he did to Yugi ' s " Exodia " cards . Haga laughed and remarked that he was glad a cute girl remembered him . Anzu also warned Jonouchi that she felt Haga was up to something , but Jonouchi thought it would cowardly to run . Haga and Jonouchi each wagered two Puzzle Cards and one rare card . Jonouchi drew the " Parasite Paracide " at an early stage , turning his monsters into Insect s , which Haga then prevented from attacking with " Insect Barrier " . Haga used " Insecticide " to destroy his " Pinch Hopper " , letting him Special Summon " Insect Queen " , which gained ATK for every Insect , including Jonouchi ' s . He used the " Insect Larva " laid by " Insect Queen " and " Multiplication of Ants " to get more Insects on the field . However , Jonouchi ' s use of " Gearfried the Iron Knight " , who was immune to " Parasite Paracide " , and " Graverobber " , which took Haga ' s " Insecticide " , allowed him to win the Duel . Haga lost his " Insect Queen " through the wager . Ceremonial Battle . When travelling to the Ceremonial Battle by boat , Jonouchi joked that they should throw the Millennium Items overboard . This reminded Yugi of Haga ' s actions from when they traveled to Duelist Kingdom . The Dark Side of Dimensions . Haga appeared among the crowd at Kaiba Land , during the Duel Disk exhibition Duel . He , along with the rest of the crowd , disappeared thanks to a distorted Aigami , but returned along with everyone else when Aigami was reverted to normal . Deck . Haga uses an Insect Deck . During Duelist Kingdom and earlier tournaments , his Deck focused on evolving " Larvae Moth " into " Ultimate Perfect Great Moth " or its earlier stage , " Great Moth " . In Battle City , he developed an " Insect Queen " strategy . For his Duel against Katsuya Jonouchi , he had the card " Parasite Paracide " snuck into Jonouchi ' s Deck , turning Jonouchi ' s monsters into Insects , which he held back with " Insect Barrier " . Duelist Kingdom . This Deck was also capable of Summoning " Ultimate Perfect Great Moth " , although it was not seen in the manga . Duels . Haga took part in the following Duels .