Original Series refers to the collective live-action works revolving Gridman.


The entirety of both Original Series and Gridman Universe was started by the first series, Denkou Choujin Gridman, produced by Tsuburaya Productions. Though the show did not become as successful as the studio's more prominent franchise Ultra Series, it did gain a following and that saw the development of photo novels Gridman: The Demon Lord's Counterattack and an animated short directed by Akira Amemiya and produced by Studio Trigger for the Japan Animator Expo titled Denkou Choujin Gridman: "boys invent great hero", both of which succeeded by Gridman Universe. By then, the Gridman story established a firm ground about the titular Hyper Agent and his allies' story as they protect humanity from threats.


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