The so-called Ninja Trilogy comprises Menahem Golan’s Enter the Ninja from 1981, and Sam Firstenberg’s sequels in-name-only, Revenge of the Ninja (1983) and Ninja III: The Domination (1984), all unified by the appearance of actor and real-life practitioner of ninjutsu Sho Kosugi (playing a different character in each title), and all rightly celebrated as showcases for the most egregious, ’80s-inflected cash-in excesses of Golan and Globus’ Cannon Films. Though the groundwork was laid by 1980’s The Octagon, it was these three films that began a veritable explosion of ninja presence in mainstream action flicks.