Yu - Gi - Oh ! - Episode 147 " Legend of the Dragons " , known as " Nameless Dragon , Timaeus " in the Japanese version , is the one - hundred and forty - seventh episode of the " Yu - Gi - Oh ! " anime . It first aired in Japan on March 4 , 2003 and in the United States on March 4 , 2003 . Summary . As the plane of the Three Swordsmen comes close to the island which was seen at the end of the previous episode , the cargo bay door opens and they all jump off aboard their bikes to race up the stairs . The plane flies away even though there ' s no - one in board . Meanwhile , Yugi Muto and the others are talking with Professor Arthur Hawkins , who has been researching some unknown undersea ruins believed to be around 10 , 000 years old . There are some engravings of Duel Monsters in there as well , suggesting they revered them . He also claims that the Duel Monsters are real beings , living in another world . Yami Yugi , as the Nameless Pharaoh , managed to seal the evil powers and avoid the destruction of the world by rampaging Duel Monsters . The evidence lies in all of the magic , tarot , rites and superstitions humanity has been building up , based off their meeting with the Duel Monsters . Tristan laughs at this theory , and Rebecca stomps her right foot , angry at his rudeness . Tristan keeps on insisting that the incidents registered yesterday are due to someone manipulating the Solid Vision System , but Téa reminds him that Seto Kaiba himself announced that it wasn ' t the case . Joey tells the Professor that he remembers what happened at the Battle City Semi - Final against Yami Marik . What he felt during that Duel and what happened to him as a result of the attack made by " The Winged Dragon of Ra " wasn ' t a Solid Vision at all . Thus , he agrees with he has just experienced . Téa adds that the fact that only the " chosen ones " can use the God Cards must be part of it , too . Yugi gives the Professor the stone they picked from Gurimo last night . The Professor recognizes it as the same kind of stones which were inside of the ruins . He claims that he ' ll go back to the U . S . along with Rebecca to research more . Once they go outside and Solomon escorts both of them to the airport in a taxi , Yugi suddenly hears a voice from inside of the Millennium Puzzle calling for help . No one else can hear it , it seems . While trying to sleep , Yugi and Yami are going over what ' s happened , wondering what ' s going to happen next . In the meanwhile , the mysterious Three Swordsmen of Doma are reporting to their enigmatic superior . He claims that the power of the Nameless Pharaoh is not to be ignored . Rafael hands him the 3 God Cards which he ' d put inside of a wooden box . The man picks them up and recognizes their hidden power . He claims that they shouldn ' t just be used for the Nameless Pharaoh to recover his memories . Instead , they shall be employed as keys for the " forbidden door " . The man places each card inside of one stone snakes ' mouth and calls upon a god , claiming that , by offering the power of the three God cards as a sacrifice to link " that land and this land " . The energy of the Cards is transferred into the sky , creating an aurora - like effect . Yugi has trouble sleeping and the voice calls out for him again . He ' s transported into Yami ' s " mind room " and they try to locate the owner of the voice . It ' s then than a Kuriboh appears and leads them into a strange city - like area where they see someone running off . Trying to follow it , both fall into another dimension : the world of Duel Monsters . Upon entering the castle , they spot 3 gigantic dragons sealed in ice and each having a sword stabbed somewhere in their bodies . Dark Magician Girl appears and tells them of the ' Dark Sun ' which is assimilating Duel Monsters . Only she and another few are left . She begs upon both Yugis to save both worlds , and tells them to unseal one of the " Nameless Dragons " . Both do so , and they somehow realize the name of this dragon : Timaeus . Awakening , Yugi is shocked to see an aurora in the sky . He runs off into the city ' s main plaza and reunites withs his pals . They all witness more Duel Monsters being absorbed into a strange mass of green crystal which gives way to the " Dark Sun " , a gigantic eye . The mysterious commander of the Three Swordmen claims that Yami Yugi shall become a sacrifice for the resurrection of his God , so the ' Dark Sun ' tries to pull Yugi in with a kind of wind spiral . Suddenly , Yugi ' s Deck shines and he takes out a Card depicting Timaeus . He calls upon its power and Timaeus manages to destroy the monster , making it shatter into several pieces which end up scattered around the world . The mysterious man seems to share some degree of pain from it and makes a grimace . Dark Magician Girl appears in front of Yugi and claims that the ' Evil God ' has hidden in the real world and it ' ll eventually be resurrected . She wishes of Yugi and Yami Yugi to defeat it and free her imprisoned comrades before she leaves . Featured cards . The following cards appeared in this episode . Cards in italics debuted here . Duel Monster Spirits . The following Duel Monster Spirits appeared in this episode .