Kaminari is also known as Kiyoshi Kurata. He is a member of the Masters of Silence. Like his teammates, Kaminari was hired by Rei Takahashi to track down and kill Tony Stark, the man responsible for a nuclear-industry related disaster which financially ruined the Akane Fusion Developments and caused 59 deaths.
When James Rhodes presented the evidence linking Stane International and Justin Hammer to the event, Kaminari and the other Masters withdrew from battle. Ashamed of themselves, they offered their services to Stark to reclaim their lost honor. Iron Man, Rhodes, and the Masters all prepared for an assault on Justin Hammer.
Kaminari and his teammates attacked Justin Hammer's Villa and defeated the Mandroids, operatives of the Hydra and the Hand, as well as Justin Hammer, who eventually surrendered. The Masters of Silence then immediately disappeared.