Geldam

Geldam is an evil organization which joined forces with Shocker and its Great Leader after the latter's defeat by the Double Riders. They merged to form Gel-Shocker. A notable member of Geldam was General Black, a Gel-Shocker executive stationed in Africa with the ability to become Hiruchameleon, he made the alliance with the Great Leader.

General Black
General Black/Hiruchameleon (80-98) - Gel-Shocker's eminent chief from Africa. His monster form is Hiruchameleon, a leech/chameleon monster. Destroyed by Kamen Rider 1 and Kamen Rider 2's Rider Double Chop. Eventually, General Black was resurrected and worked for Destron in an important operation, but ended up dying in the self-destruction of a Destron base.

In Kamen Rider Spirits, he is resurrected along with the Gel-Shocker's monsters by the Badan Empire, and he gets destroyed again by Kamen Rider 2 and ZX.

Hiruchameleon also appeared in Movie War 2010 as a minor Super Shocker member. He fought against Yuusuke Onodera, Kamen Rider Kuuga, but he was quickly defeated.

In OOO, Den-O, All Riders: Let's Go Kamen Riders, he appears as a member of Shocker finding the Cell Medal that Ankh dropped, for the creation of Shocker Greed. He is killed by Kamen Rider OOO.

Ganikomol
Ganikomol (78-80, 97) - A crab/bat monster. Its flight capable and its power and reflexes seemingly surpassed Kamen Rider 1. Ganikomol was the only Geldam monster that actually appears in the series. He faces Kamen Rider 1 several times as a mysterious opponent, denying to be a Shocker monster. However, after Shocker is destroyed and Gel-Shocker arises, Ganikomol faces Rider 1 once again. In a desperation move, Kamen Rider 1 goes against its flight attack in mid air, and the impact creates an explosion which seemingly engulfs both.