|This article is about a/an kaijin in Kamen Rider, the original series.|
|Episodes:|| Monster Jellyfish Wolf, Dreadful Rush Hour|
Gel-Shocker Annihilated! The End of the Leader!!
|Actors:|| Ritsuo Sawa|
Sakae Umezu (Human Form)
He was destroyed by Kamen Rider 1's Rider Tailspin Shoot.
He can absorb up to 100,000 volts of electricity, use an electric tentacle as a whip that can be attached to either arm, and has slime around the body to make him hard to grab.