|This article is about a/an ally in Kamen Rider Blade.|
Trial B was an Electric-Type Undead disguised as Shiori's father, Yoshito Hirose. Originally, his program was to protect Shiori by her father because he was dying. Before he died, he transferred all his memories to the Trial. He was reprogrammed by Hiroshi Tennoji to continue to monitor the fixed Undead battle and remove potential threats. He dies saving Shiori from Trial G after remembering his original programming.
- Height: 218 cm
- Weight: 112 kg
Behind the Scene
- Kamen Rider Blade
- Episode 31: The 53rd Being
- Episode 32: The Destroyer's Secret
- Episode 33: The Targeted Kenzaki
- Episode 34: Category King
- Episode 35: A Dangerous Transformation!?
- Episode 36: Strongest Form
- Episode 37: Towards a New Destiny
- Episode 38: One Who Takes Hold of Destiny
- Episode 39: Reunion...Father and Daughter
- Episode 40: Parting With the Past