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English name
  • Brown
Japanese translatedYuiitsu Kurokawa
Japanese name
Japanese黒川くろかわ 唯一ゆいいつ
Base黒川 唯一
Furiganaくろかわ ゆいいつ
RōmajiKurokawa Yui'itsu
  • Male
SchoolDuel Academy
DormitoryObelisk Blue
Tag ForceEmpty Darkness
Tag Force 2Empty Darkness
Tag Force 3
  • Empty Darkness
  • E.S.P! E.S.P!
Video game debutYu-Gi-Oh! GX Tag Force
Appears in
PlayStation 2Yu-Gi-Oh! GX Tag Force Evolution

Brown, known as Yuiitsu Kurokawa in the Japanese version, is a character appearing in the Tag Force series. He is an Obelisk Blue student.


Tag Force[edit]

Brown is found at the Obelisk Blue dorm or the Stadium, and is grouped with Truly, Celia, Seydina, Dante and Rock as each of them wields a Deck of one of the six Attributes. Brown is the group's DARK user.

Upon acquiring his Deck Recipe, Brown also gifts the player with a "Two-Mouth Darkruler" card.

Brown is the only student that does not take part in the Tag Force tournament.

Tag Force 3[edit]

In Obelisk Blue Syrus' third event, Brown and Dante Tag Duel against the player and Syrus.


Tag Force 2-3[edit]

Strongly likes Likes Neutral Dislikes Strongly dislikes
  • Golden Egg exclusively
  • Cook's Sandwich
  • All other sandwiches
  • None
  • None


Brown uses DARK Decks in every game. He mostly uses Fiend-Type monsters with disruptive battle-based effects in the first installment, while his Decks in the later games are more Beatdown-oriented and also feature "Virus" cards.

Brown's usual Decks are titled "Empty Darkness" (誰もいない闇) in the Japanese version of each game.

Tag Force[edit]

Empty Darkness ★4

Tag Force 2[edit]

Empty Darkness 1 ★5
Empty Darkness 2 ★6
Empty Darkness 3 ★6

Tag Force 3[edit]

Empty Darkness 1 ★6
Empty Darkness 2 ★7
Empty Darkness 3 ★8
  • Brown only uses this Deck as an event opponent in Syrus' story.
E.S.P! E.S.P! (E・S・P!E・S・P!) ★6