SSSS.Gridman (stylized as SSSS.GRIDMɅN) is a Japanese anime television series adaptation of the 1993–1994 tokusatsu series Denkou Choujin Gridman.[3] The production is a joint collaboration between Tsuburaya Productions, the production company behind Gridman and the Ultra Series, and Trigger. The two production companies previously collaborated on the Denkou Choujin Gridman: boys invent great hero short original net animation for the Japan Animator Expo. The "SSSS" in the title stands for "Special Signature to Save a Soul" as revealed in the final episode. It is also a reference to Superhuman Samurai Syber-Squad, a US adaptation of Gridman the Hyper Agent. A sequel, titled SSSS.Dynazenon, was announced as a continuation of SSSS.Gridman set in the same shared "Gridman Universe", and premiered on April 2, 2021.