Blair Flannigan Blair Flannigan , known as Rei Saotome ( レイ " Saotome Rei " ) in the Japanese version , is an underage student and the only girl in the Slifer Red dorm . Initially a minor character appearing in a stand - alone episode during the first season , Blair joins the central cast at the beginning of the third after proving her worth as a Duelist . Personality . In the first season , Blair was a shy , love - struck but highly intelligent young girl . She had an insane crush on Zane , but switched to a crush on Jaden by the end of her first episode . She has aced perfectly on all her entry exams and was almost ranked to Ra Yellow . When she returned near the end of season 2 , she kept her crush on Jaden but grew up greatly became much more developed , much more mature and even developed a sort of leadership role . Design . Voice / Mannerisms . In the dub , Blair takes on a Brooklyn accent beginning with her reappearance at the second season ' s conclusion ( though she seems to lose it later on ) . During her Duel with Chazz she also made some egg puns ( " that ' s no yoke " , " eggcelent " ) . In the original , she refers to herself with " boku , " a word for " I " typically spoken by young males , though its use by females is not unheard of . Though in the Tag Duel against Jaden and Alexis , when speaking to Jaden , Blair called herself " watashi " , a significantly more formal personal pronoun that females often use . She did this in order to show her respect to Jaden , since she has a crush on him . She also refers to Marcel ( Martin ) as " Marty " in the original . Appearance . When she was first introduced , she wore a standard Slifer Red jacket and boots with gray pants ending at the ankles . To hide her hair she disguised herself as a boy , she then wore a clip with both a large hat and an orange bandanna . When Blair returned near the end of season 2 , she was once again disguised , since she still used her bandanna and wore a kabuki mask . She now wore a sleeveless orange shirt under an dark blue and aqua version of the Obelisk Blue jacket with blue jeans and lilac boots . Starting from season 3 , Blair ' s main outfit consists of her orange shirt , a Slifer vest , black shorts with a slanted brown belt , black socks that went slightly above her knees and newly designed Slifer boots . She continued to wear this outfit even after she became an Obelisk . Etymology . Her original Japanese name , " Rei " means " bell " or " lovely " . It could be an allusion to the series " Neon Genesis Evangelion " , a series in which the primary female protagonists were named Rei and Asuka . Her last name , " Saotome , " means " fast maiden " . It could also be a reference to the popular martial - arts romance manga " Ranma 1 / 2 , " which featured a gender - switching protagonist named " Ranma Saotome " . This is relevant since she first appeared in the GX anime disguised as a boy . Her English name , " Blair , " means " plain " or " field . " Biography . Seven Stars . Blair is a transfer student who enters Duel Academy during her first year disguised as a boy . She is placed in the Slifer Red dormitory , and guided by Jaden , Syrus , and Chumley . Behind her guise , Blair intended to get closer to Zane , with whom she was in love . While sneaking around Zane ' s room in Obelisk Blue , she is caught by Jaden , who discovers her secret and pursues her on the matter late at night after the confrontation . The two Duel , and although Blair is defeated , she finally has the opportunity to meet with Zane . He is flattered by her affections , but turns her down , telling her to go home . Being a fifth - grade elementary student ( second grade in the English dub ) , she is forced to leave the school on the technicality that she is too young to stay . As she departs , her feelings shift from Zane to Jaden , much to the latter ' s horror . Society of Light . During the second year , Blair returns near the end of the Genex Tournament and challenges Zane following his " rebirth , " but he declines , and she instead Duels with Chazz to claim the champion title of the tournament and officially enter Slifer Red . Despite overwhelming improvement in her skills that allow her to push him into a corner , Chazz is able to claim victory in the end . At that time , an integral part of Blair ' s personality becomes clearer . Her love interests are constantly changing , as evidenced by her brief admiration of Chazz , but that was due of Chazz saying the same lines as Jaden , whom she still have a crush . Dimension World . Even though she lost to Chazz , Blair is admitted to Slifer Red , and becomes a member of the central cast at the beginning of the third year . She tries to befriend Marcel during that time , but mostly proves unsuccessful . She commandeers Chazz ' s room , forcing him to bunk with Jaden . When Duel Academy gets sent to the alternate dimension , she gets attacked by Yubel when she gets near Marcel and comes down with a mysterious illness . Jaden , Jesse , Axel , Jim , and Adrian get medicine from a submarine that Bastion saw . She gets healed by this medicine soon after . After recovering she later sees the Yubel - possessed Marcel Dueling Jaden and Jesse . She shows that she cares for Marcel when she demands the spirit release him , which it does , and then throws Marcel at her ( Yubel willingly left Marcel because she didn ' t need him anymore ) . Darkness . At the start of the fourth season she gets promoted to Obelisk Blue , but she still wears her red jacket . Later on , Blair is teamed up with Tyranno Hassleberry in a Tag - Team Duel tournament . She eventually Duels the pair of Jaden and Alexis , during which she decides to take advantage of Alexis ' frustration with Jaden and switches partners ( wanting to be on the same team as Jaden because of her crush on him ) , allowing her to team up with Jaden . Jaden seemed to work much better with Blair than with Alexis . When Alexis noticed that Jaden had gone back to enjoying Duels , she switched back , much to Blair ' s chagrin , and frustration . She then lost the Duel . It is assumed she was later absorbed into the World of Darkness and was revived when Jaden defeated Nightshroud . She is returned upon Nightshroud ' s defeat , and runs to Jaden to give him a hug . Other appearances . Tag Force . In " Yu - Gi - Oh ! GX Tag Force " , Blair initially appears in room 102 of the Slifer Red dorm . Three items belonging to her can be obtained from three other characters . When all three items are returned to her , she gives up her disguise and can be found outside the Slifer Red dorm , but only during class hours . Tag Force 2 . Blair appears as a Slifer Red Student . She ' s one of the main story characters . Tag Force 3 . Blair appears " Yu - Gi - Oh ! GX Tag Force 3 " as a Slifer Red student . An Obelisk Blue version of her can also be unlocked . She is one of the main story characters . Deck . Blair ' s initial deck is a Love deck focusing on " Maiden in Love " , using it to take control of enemy monsters and turn them against their user . She further uses support for the Maiden like " Cupid ' s Kiss " and " Happy Marriage " to optimize this strategy . During the Genex Tournament , Blair uses a Mystic deck . The deck ' s full mechanics are not explored , but it seems to revolve around summoning monsters by the effect of " Mystic Egg " and using " Mystic Revolution " to evolve them into powerful high - level forms . In Season 4 , Blair uses a Token deck , relying on summoning Token monster s .