The Checkmate Four's King (キング, Kingu) is the main antagonist of Kamen Rider Kiva. He was the father of Taiga Nobori and the Bat Fangire (バットファンガイア, Batto Fangaia), with his true name being The Dawn Sleeps, A Magnificent Story's Ending (暁が眠る、素晴らしき物語の果て, Akatsuki ga Nemuru, Subarashiki Monogatari...

Rat Fangire (ラットファンガイア, Ratto Fangaia), whose true name was Black Death (黒い死, Kuroi Shi), was a member of the Beast Class. He possessed great speed and wielded a sword and pistol as weapons. Appearing in 1986, he is first targeted by Yuri Aso until he overpowers and nearly kills her. After Maya...

Dogga (ドッガ, Dogga) of the Franken Race (フランケン族, Furanken Zoku) was one of the Arms Monsters, the servants of Kiva, each the last of his kind. They support Kiva by turning into the weapons that allow Kiva to change form. [Second Movement ♬ Prince Kiva] They were absorbed into Beetle Fangire's...

The Fangire Buster (ファンガイアバスター[1], Fangai'a Basutā) is a multi-purpose weapon developed by the Wonderful Blue Sky Organization to fight Fangires in 2008. It can be considered the successor to the Fangire Slayer fielded by Blue Sky agents in 1986. The Fangire Buster's primary use is as a...