|This article is about a/an ally in Kamen Rider Zero-One.|
Subaru is the opposite of Raiden. While Raiden has a aggressive, passionate and hotblooded personality, Subaru was more calm, such as when they're putting the Rise Hopper back to Zea and when they stormed Aruto's office, Aruto apologizes and Subaru forgives Aruto, but Raiden continues to berate Aruto.
- Cognitive Learning: Subaru can learn new experiences and act according to what he processes from them.
- Zea Database Accessing: Being the maintenance head of Zea, Subaru can access Zea from Earth and activate Zat like Izu does.
- Uchuyaro Raiden: Raiden is Subaru's brother and fellow Astronaut-Type Humagear, who is then revealed to have been a spy for MetsubouJinrai.net. He appeared to have disowned him upon this discovery, but after achieving Singularity, Subaru began to mourn Raiden upon realizing his destruction.
Behind the Scenes
Uchuyaro Subaru is portrayed by Kyosei Kuwahata (桑畑 亨成 Kuwahata Kyosei).
- Raiden is an older generation of Humagear while Subaru is a current model, which technically makes Raiden the older "brother".
- Kamen Rider Zero-One