Kamen Rider Seeda (仮面ライダーシーダ Kamen Raidā Shīda) was an unused Kamen Rider from Kamen Rider 555. Its only appearance is in the artbook ICON: Tamotsu Shinohara Character Art Works. Appearing in a mock-up of a Smart Brain sales catalogue, the Seeda Gear is described as a "New Standard Model" and belongs to the Omicron Series, having been developed from the Riotrooper Rider Gear. It was designed to be used by authorities such as the police, military, and rescue workers. The Seeda Gear comes in four colors: Silver Mint, Guardian Blue, Rescue Orange, and Urban White. Though the official description mentions no weapons, a modified version of the Riotrooper's Axel Ray Gun can be seen on its left hip.