|This article is about a/an group of monsters in Kamen Rider Kiva.|
The Checkmate Four (チェックメイト・フォー Chekkumeito Fō) are the four most powerful members of the Fangire race, each bearing a tattoo of the chess piece they are named after. These four Fangires receive the titles of Rook (ルーク Rūk) the hunter, Bishop (ビショップ Bishoppu) the keeper of Fangire laws, and Queen (クイーン Kuīn) & King (キング Kingu), the rulers of Fangires. In 1986, the Checkmate Four were based in Castle Doran. By 2008, only Bishop and Rook remained as they recruit a new Queen and King.
- Despite being themed after chess pieces, there was never a position made for the Knight piece, the last of the special pieces, with the rest of the Fangires potentially being referred to as the "pawns". This could be because, in Japan, the number "4" (四 Shi) is a homophone with "death" (死 Shi), and as such, 4 is considered a unlucky number by many Asian cultures.
|Kamen Rider Kiva|
|Wataru Kurenai - Kivat-bat the 3rd - Demon Imperial Dragon Tatsulot - Castle Doran - Shoodoran|
|The Arms Monsters: Jiro - Ramon - Riki|
|Gear: Kivat Belt - Fuestles - Demon Imperial Sword Zanvat Sword - Machine Kivaa|
|The Wonderful Blue Sky Organization|
|2008: Mamoru Shima - Keisuke Nago - Kengo Eritate - Megumi Aso|
|1986: Otoya Kurenai - Yuri Aso|
|The Checkmate Four:|
|1986: Queen I - King I|
|2008: Bishop - Rook - King II - Queen II|
|Pawns: Horse Fangire - Octopus Fangire - Moth Fangire - Sheep Fangire - Ryo Itoya - Prawn Fangire - Frog Fangire - Earwig Fangire - Rhinoceros Fangire - Seastar Fangire - Ladybug Fangire - Chameleon Fangire - Grizzly Fangire - Shark Fangire - Crab Fangire - Cicada Fangire - Warthog Fangire - Moose Fangire - Horsefly Fangire - Rat Fangire - Mantis Fangire - Seamoon Fangire - Silkmoth Fangire - Polar Bear Fangire|
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