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English name
  • Vyga
Japanese translatedKoji Domoto
Japanese name
Japanese堂本どうもと 工事こうじ
Base堂本 工事
Furiganaどうもと こうじ
RōmajiDōmoto Kōji
  • Male
SchoolDuel Academy
DormitoryRa Yellow
Tag ForceChinese Spirits
Tag Force 2Brute Power
Tag Force 3He Is As A Shield
Video game debutYu-Gi-Oh! GX Tag Force
Appears in
PlayStation 2Yu-Gi-Oh! GX Tag Force Evolution

Vyga, known as Koji Domoto in the Japanese version, is a character appearing in the Tag Force series. He is a Ra Yellow student.


Vyga has a particularily formal manner of speech in the Japanese version, which the Western releases downplay slightly to make him sound more easily excitable.

Tag Force[edit]

Vyga can often be found at the Obelisk Blue Girls Dorm.

He teams up with Colin for the Tag Force Tournament.

Tag Force 2-3[edit]

Vyga is Deloge's partner in the Ra Yellow Tournament during Tag Duel Sundays.


Tag Force 2-3[edit]

Strongly likes Likes Neutral Dislikes Strongly dislikes
  • Fried Noodle
  • Curry
  • Spicy Curry
  • Lettuce
  • Foie Gras
  • Normal Egg
  • Croquette
  • Hamburger
  • Ham
  • Cheese
  • Cook's Sandwich
  • Any sandwich not listed
  • Gyoza
  • Lobster
  • Garlic
  • Fermented Cheese
  • Fermented Soybean
  • Durian
  • Chestnut
  • Kimchi
  • Pepper
  • Steak


Vyga uses a Warrior Deck in the first game. In the following installments, he instead uses a Beatdown Deck featuring many cards telling the stories of "Marauding Captain" and "Gagagigo".

Tag Force[edit]

Chinese Spirits (漢スピリット) ★5

Tag Force 2[edit]

Vyga's Decks are titled "He Is As A Shield" (あいつを盾に) in the Japanese versions of Tag Force 2 and Tag Force 3.

Brute Power 1 ★7
Brute Power 2 ★7
Brute Power 3 ★7

Tag Force 3[edit]

He Is As A Shield 1 ★5
He Is As A Shield 2 ★6
He Is As A Shield 3 ★7