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For other versions of this character, see Sadie (disambiguation).
English name
  • Sadie
Japanese translatedSeiko
Japanese name
  • Female
OccupationCard shop clerk
SchoolDuel Academy
Anime debutYu-Gi-Oh! GX episode 4: "Raring To Go"
Video game debutYu-Gi-Oh! GX Duel Academy
Appears in
AnimeYu-Gi-Oh! GX
Game Boy AdvanceYu-Gi-Oh! GX Duel Academy
Nintendo DSYu-Gi-Oh! GX Spirit Caller
PlayStation 2Yu-Gi-Oh! GX Tag Force Evolution
English voice
Japanese voice
  • Yuki Kugimiya

Sadie, known as Seiko in the Japanese version, is a young lady who works in Ms. Dorothy's card shop in the Yu-Gi-Oh! GX anime. Her name is never given in the English version of the anime, but she is named in the video games.


Sadie works at Duel Academy's card shop alongside Ms. Dorothy.

Sadie is pulled into the alternate dimension with the rest of Duel Academy. She and Dorothy take responsibility for rationing the food during the ordeal.

Other appearances[edit]

Tag Force series[edit]

Sadie appears as a special unlockable opponent in the first three Tag Force games. She is also featured in Tag Force Special.

Spirit Caller[edit]

Sadie, in Spirit Caller

Sadie works at the card shop. During weekdays she can be found in the Forest, thanking the player for being a regular customer and apologizing to them for running out of packs. She is the shop's cashier during weekends and during special events.