Ryo Itoya

The Spider Fangire (スパイダーファンガイア, Supaidā Fangaia) with his t rue name being "The Capriccio of the Paradise with Light" (光ある楽園の綺想曲< Hikari Aru Rakuen no Kisōkyoku) of the Insect Class (インセクトクラス, Insekuto Kurasu) of the Fangire subclass, is a dangerous and childish psychopath with a diehard attraction to the Aso women (Yuri in 1986; Megumi in 2008), and has been an annoyance to the protagonists of the series since the first episode.

Ryo Itoya
Ryo Itoya is the human form of the Spider Fangire, he is an insane Fangire. Because of his encounters with Yuri and Otoya in 1986, he has become obsessed with her. In 2008, his obsession shifts to Yuri's daughter Megumi, making attempts to have her for himself. In his final attempt, he accidentally gains the Ixa Belt and uses it to make Megumi his. But once he loses the Ixa Knuckle due to his attraction to Megumi, Ryo is weakened by the Garulu Fever of Emperor Form and then destroyed by the fully awakened Mio.

He uses hand puppets to talk to his prey, cowardly attacking weaker opponents. He first appears in 1986 at a funeral where Yuri attempts to kill him but he escapes via his invisibility ability. Though Otoya lacks the strength to fight Ryo, Jiro manages to force the Spider Fangire to retreat. At 2008, Ryo reintroduces himself while abducting Megumi due to the resemblance to her mother. Unfortunately, the Sheep Fangire's own obsession with Megumi proves a hindrance in Ryo's plan. When Ryo attempted to abduct Megumi personally, he gets attacked by Ixa, escaping when Kiva gets attacked himself and finding the Rider's body along the shore, and was about to crush Kiva's skull with a rock then fleed when Kiva twitched, the latter still within the land of the living.

With this bit of info, Ryo manages to get Keisuke to spare him for the moment and go after Megumi without fear of Ixa's interference, though it was only to serve in Keisuke's interests of getting Kiva out to the open, driving the Fangire off once he did his job. When the Bishop arrives, Ryo was used by him to awaken Mio as the new Queen, stealing the Ixa Knuckle as a result. After losing the Ixa Knuckle due to his attraction to Megumi, he is later severely beaten by Kiva in Emperor Form before he was completely destroyed by Mio, fully awakened as the new Queen.