A long time ago, Kaen no Double Zeta discovered blueprints left by someone, restored and created this giant weapon, which he hid in the Anaheim Mountain in preparation for a future threat. The original name of this weapon was "Taiyo Koho", but the blueprints were old and partially torn, so Double Zeta could only read it as "Daihagane", and wrote it as "Daihagane". Also, while its original form was long-limbed, Double Zeta added the ability to transform into a Gohagane Form to protect it from all external enemies in order to hide it in the Anaheim Mountain. It also has weapons such as the Daitetsuken, which fires punches, the heavy sword Daihaken, and the Daigo Gun, which fires arrows of light. It was revived with the eruption of the Anaheim Mountain, and while it contained V-Maru, it fought a fierce battle against Hadou Musha Masatsuku and Yamaginri Goshako.
Kidou Musha Daihagane
（Taiyo Koho）A long time ago, Kaen no Double Zeta discovered blueprints left by someone, restored and created this giant weapon, which he hid in the Anaheim Mountain in preparation for a future threat. The original name of this weapon was "Taiyo Koho", but the blueprints were old and partially torn, so Double Zeta could only read it as "Daihagane", and wrote it as "Daihagane". Also, while its original form was long-limbed, Double Zeta added the ability to transform into a Gohagane Form to protect it from all external enemies in order to hide it in the Anaheim Mountain. It also has weapons such as the Daitetsuken, which fires punches, the heavy sword Daihaken, and the Daigo Gun, which fires arrows of light. It was revived with the eruption of the Anaheim Mountain, and while it contained V-Maru, it fought a fierce battle against Hadou Musha Masatsuku and Yamaginri Goshako.