|This article is about a/an monster in Kamen Rider, the original series.|
Rayking (エイキング Eikingu, 38, Kamen Rider: Seigi No Keifu, Rider vs Shocker & Rider vs Ambassador Hell) - A ray monster. His personal mark worn by his Combatants was a ray silhouette. He was able to release million-volt lightning discharges to vaporize humans. Hayato described him as a formidable foe. He tried to recapture a runaway from one of Shocker's outposts, Dr. Toshihiko Seki, only for him to stumble upon the members of the Tachibana Racing Club. Participated in Operation: Worldwide Blackout to set up bombs at a local power station, but they were stopped by Taki after a single detonation, while Rayking himself was destroyed by Kamen Rider 2's Rider Kick. Rayking made a brief appearance in the monster army of the Kamen Rider vs. Shocker movie but did not actually have active participation. Returned in the Kamen Rider vs. Ambassador Hell movie, participating in an ambush to Kamen Rider 1 and Taki, and holding them off while another Shocker operation was prepared.