Denkou Choujin Gridman (電光超人グリッドマン Denkō Chōjin Guriddoman, lit "Lightning Superman Gridman"), also known as Gridman The Hyper Agent is a Japanese tokusatsu "Giant Hero" series by Tsuburaya Productions, the producers of Ultraman. The show ran from 1993 to 1994. It was the inspiration and source material for DiC Entertainment's Superhuman Samurai Syber-Squad. This would be Tsuburaya's last non-Ultra superhero production before Bio Planet WoO.
Shot on live video, Gridman was the first series by Tsuburaya Productions to utilize D-2 digital video for its special effects scenes, allowing for smoother slow-motion photography. Tsuburaya, having switched to digital techniques since then, would continue to use D-2 for all future productions.
Three computer-savvy kids, Naoto, Yuka, and Ippei create their own videogame super-hero, but then discover it possessed by an inter-dimensional police officer, Gridman. Pursuing an evil program called Kahn Digifer, he merges with Naoto and fights Kahn Digifer's digitized monsters (created by social misfit Takeshi) in order to prevent the computerized demon from wreaking havoc on the Human World.