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Walter, in Tag Force 1-3
Walter, in Tag Force 1-3
English name
  • Walter
Japanese translatedTakafumi Kai
Japanese name
Japanese甲斐かい 隆史たかふみ
Base甲斐 隆史
Furiganaかい たかふみ
RōmajiKai Takafumi
  • Male
SchoolDuel Academy
DormitorySlifer Red
Tag ForceEnvoy from Another Planet
Tag Force 2Unknown Chaos
Tag Force 3The Strongest Worm in History
Video game debutYu-Gi-Oh! GX Tag Force
Appears in
PlayStation 2Yu-Gi-Oh! GX Tag Force Evolution

Walter, known as Takafumi Kai in the Japanese version, is a character in the Tag Force series. He is a Slifer Red student.

In Yu-Gi-Oh! 5D's Tag Force 4-6, his name is given to Senshi Teshima.


Tag Force[edit]

Walter teams up with Hayden for the Tag Force Tournament.

Tag Force 2-3[edit]

Walter is partnered with Yan in the Slifer Red Tournament during Tag Duel Sundays.


Tag Force 2-3[edit]

Strongly likes Likes Neutral Dislikes Strongly dislikes
  • Gyoza
  • Foie Gras
  • Pepper
  • Dried Sardine
  • Ham
  • Pineapple
  • Phantom Pepper
  • Fried Shrimp
  • Curry
  • Lettuce
  • Cook's Sandwich
  • Any sandwich not listed
  • Top-Grade Salad
  • Jam
  • Bean Paste
  • Grape
  • Soba Noodle
  • Ramen Noodle
  • Chicken
  • Croquette
  • Spicy Fish Egg
  • Goya
  • Kimchi

Ending Scenes[edit]


In the first two Tag Force games, Walter uses Alien Decks. Compared to Jaime, Walter's Decks as a whole are more oriented towards locking down the field. They also include other cards themed after topics usually associated with aliens such as "Beast Soul Swap", whose original Japanese name is "Cattle Mutilation".

In Tag Force 3, Walter switches to Worm Decks.

Tag Force[edit]

Tag Force 2[edit]

Tag Force 3[edit]