The Shark Fangire is an antagonist in Kamen Rider Kiva.
Kamen Rider Kiva
The Shark Fangire was sent by Bishop to assist the Spider Fangire in attacking Mio Suzuki to force her to become the Fangire Queen by force. During the two Fangire's hunt for Mio they were confronted by Kiva, who shattered the Shark Fangire with his Emperor Moon Break.
Kamen Rider Decade
The Shark Fangire was part of a group of Fangire who caused havoc while Natsumi Hikari was trapped within the changing dimensions during the destruction of the worlds.
In the World of Kiva, the Shark Fangire was one of the Fangire who fought for their king Wataru against the Riders and Undead of the World of Blade when their worlds were merged into the world of the Rider War. The Fangires later help Saga defeat the Oni Riders from the World of Hibiki.
Later, the Fangire ally with Dai-Shocker along with the Undead after their queen Yuki abandoned Wataru to marry Apollo Geist. During the battle between Apollo Geist's forces and Decade's companions, the Shark Fangire was destroyed alongside the remaining Fangire and Undead by Diend's Dimension Shoot.