Gridman the Hyper Agent in the context of Ultraman

Tokusatsu (特撮（とくさつ）; lit. 'special filming') is a Japanese term for live-action films or television programs that make heavy use of practical special effects. Credited to special effects director Eiji Tsuburaya, tokusatsu mainly refers to science fiction, superhero, fantasy, or horror media featuring such technology but is also occasionally dubbed a genre itself. Its contemporary use originated in the Japanese mass media around 1958 to explain special effects in an easy-to-understand manner and was popularized during the "first monster boom" (1966–1968). Prior to the monster boom, it was known in Japan as tokushu gijutsu (特殊技術; lit. 'special technology') or shortened tokugi (特技; lit. 'special technique').

Subgenres of tokusatsu include kaiju such as the Godzilla and Gamera series; superhero such as the Kamen Rider and Metal Hero series; Kyodai Hero like Ultraman and Denkou Choujin Gridman; and mecha like Giant Robo and Super Robot Red Baron. Some tokusatsu television programs combine several of these subgenres, for example, the Super Sentai series.