Kurageron is a jellyfish monster working for Neo-Shocker and an antagonist in episodes 20 and 21 in Kamen Rider (Skyrider).
Kamen Rider (Skyrider)
Kurageron hails from Kowloon, Hong Kong. He participated in a two-way plan with Sai Dump to annihilate Japan. His part was to mass breed his poisonous jellyfishes and unleash them into the country's water supply. He was destroyed by Kamen Rider Stronger's Super Electron Drill Kick.
He was later resurrected as part of Kaijin the Second Generation Corps in episodes 27 and 28, donning a yellow scarf. However, they were destroyed by the 7 Riders.
Kamen Rider Super-1
Kurageron was once again revived as part of the Dogma Revenge Corps and destroyed by Skyrider.
POwers and Abilities
Kurageron's pet jellyfishes can vaporize targets they attach to and can also transform into Ari Commandos. He can extend his right tentacle arm into a flail/whip and is also invulnerable to the Sky Kick. His soft body cushions the power of the attack and temporarily deflates him. Ari Commandos under his control also wield tentacle like lassos.