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Sigthor, in Tag Force 1-2
English name
  • Sigthor
Japanese translated
  • Ikuo Kiyokuni
  • Male

Duel Academy


Slifer Red

Tag Force
  • Third Dragon
Tag Force 2
  • Time to Unite
Video game debut

Yu-Gi-Oh! GX Tag Force

Appears in
PlayStation 2

Sigthor, known as Ikuo Kiyokuni in the Japanese version, is a character in the Tag Force series. He is a Slifer Red student.


Tag Force

When the player receives Sigthor's Deck Recipe in Yu-Gi-Oh! GX Tag Force, they also receive the card "The Graveyard in the Fourth Dimension". Unless partnered with the player, he partners with Joshua during the Tag Force tournament.


The player is able to give Sigthor sandwiches. The following tables detail how much he likes or dislikes the sandwiches.

Tag Force

Strongly likes Likes Neutral Dislikes Strongly dislikes

Tag Force 2

Strongly likes Likes Neutral Dislikes Strongly dislikes

Tag Force 3

Strongly likes Likes Neutral Dislikes Strongly dislikes


Tag Force

In Yu-Gi-Oh! GX Tag Force, Sigthor uses a Deck titled "Third Dragon", which contains many Dragon-type Normal Monsters. He can use "Heart of the Underdog" to quickly draw large amounts of them and fuse them into more powerful monsters with "Fusion Gate".

Third Dragon

Tag Force 2-3

In later installments, he switches to a Deck more focused on Union monsters.

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