The Progrise Key Connector (プログライズキーコネクタ) is a device that stores up to 4 Progrise Keys. One is seen in the possession of MetsubouJinrai.NET, who use it to retrieve data from Zetsumerise Keys. There are also several of them in Hiden Intelligence’s lab. Izu uses one to carry all of Zero-One’s Progrise Keys, as he can only carry two on his person at a time using his Progrise Holders.
The Amazing Hercules Progrise Key (アメイジングヘラクレスプログライズキー) is a Progrise Key possessed by Kamen Rider Horobi. Its ability is Strong and it is based on a Hercules beetle.