The Rat Fangire, whose real name is Black Death, is a Beast Class Fangire and an antagonist in Kamen Rider Kiva.
He was voiced by Ryuzou Ishino.
Kamen Rider Kiva
The Rat Fangire attempted to kill Yuri Aso when she targeted her, but Maya interferes and stops him from killing Yuri, leading the Rat Fangire to vow on the Fangire who held the title of Queen of the Checkmate Four.
The Rat Fangire resurfaced and developed the ability to multiply himself into an army of clones. However, the Rat Fangires are all shattered by Kiva Emperor Form using the Zanvat Sword.
All Riders vs. Dai-Shocker
The Rat Fangires are among the revived monsters who were part of the massive Dai-Shocker army in the World of Decade.
Kamen Rider x Super Sentai: Super Hero Taisen
Rat Fangire is revived again to join the resurgent Dai-Shocker army assembled to eliminate the Super Sentai. Later, after Dai-Shocker joined forces with Dai-Zangyack to destroy the Kamen Riders and Super Sentai, the alliance between the organizations faced off against the combined forces of the Sentai and Riders.