|This article is about a/an kaijin in Kamen Rider, the original series.|
|Episodes:|| Lightning Monster Eiking's World Darkness Plan|
Kamen Rider vs. Shocker
Kamen Rider vs. Ambassador Hell
Kamen Rider: Seigi No Keifu
Eiking (エイキング Eikingu, 38, Kamen Rider: Seigi No Keifu, Rider vs Shocker & Rider vs Ambassador Hell) - A stingray monster. His personal mark worn by his soldiers was a stingray silhouette. He was able to release 1,000,000-volt electrical discharges strong enough to vaporize humans as projectiles. Hayato described him as the most powerful monster he'd ever faced at that point. He tried to recapture a fugitive from one of Shocker's outposts, only to stumble upon the members of the Tachibana Racing Club. Participated on an operation to set up bombs, but they were stopped by Taki after a single detonation, while Eiking himself was destroyed by Kamen Rider #2's Rider Kick. Eiking made a brief appearance in the monster army of the Kamen Rider vs. Shocker movie, but did not actually have an active participation. Returned in the Kamen Rider vs. Ambassador Hell movie, participating of an ambush to Kamen Rider #1 and Taki, and holding them off while another Shocker operation was prepared.