|This article is about a/an villain in Kamen Rider Decade.|
Yuki (ユウキ Yūki) was the guise of the Thorn Fangire (ソーンファンガイア Sōn Fangaia), a member of the Aqua Class and the Queen of the Fangire in the World of Kiva. Her true name was Perishing at the Altar, Silence from a Deep Kiss (滅びゆく祭壇に、沈黙より深いキスを Horobiyuku Saidan ni, Chinmoku yori Fukai Kisu o). She wielded a sword named the Man-eater Saber (マンイーターサーベル Man'ītā Sāberu), which was able to absorb the life energy of the Thorn Fangire's opponents and transfer it to her.
Kamen Rider Decade
World of the Rider War
Though she supports Wataru, Yuki actually sides with Apollogeist, marrying him to give him immortality so she can have a place in Dai-Shocker. When Tsukasa crashes the wedding, the Thorn Fangire fights him and is killed by Decade Complete Form with Ryuki Survive's power.
Video Game appearances
Kamen Rider Riderbout
Thorn Fangire Undead appears as a playable character with the other Heisei and Showa kamen Riders in Kamen Rider Riderbout.
- Height: 187 cm
- Weight: 98 kg
Behind the scenes
- Yuria Haga (芳賀 優里亜 Haga Yuria) portrays Yuki, having portrayed the similar character Mio Suzuki in Kamen Rider Kiva.
- Despite being classified in the Aqua Class, the plant she is named after does not occur in water.