To understand the franchise:
JP Shōwa era (1954–1975) - Daikaijū movies and a toku TV series.
JP Heisei era (1984–1995) - New timeline sequel to the 1954 film that ignores the Shōwa era.
JP Millennium era (1999–2004) - Anthology where each film is a standalone story, with the 1954 film serving as the only previous point of reference.
* In this era, Mechagodzilla (2002) and Tokyo SOS (2003) are the only films to share continuity and are also connected to Mothra (1961).
JP Era Reiwa (2016-now) - Toho's complete reboot of the franchise.
US Americanized (1956, 1959, 1963, 1964, 1985) - 5 re-edited Japanese films, adding different footage with American actors.
FR Frenchnized (1957) - Obscure re-edited French dubbed that combines elements of the 1954 (JP) and 1956 (US) versions.
ITA "Codzzilla" (1977) - Re-edited and colorized Italian dubbed that uses the US version (1956) plus WWII newsreel and clips from other monster movies.
US Hanna-Barbera (1978-1979) - TV animated series
US TriStar Pictures (1998–2000) - USA remake and a TV animated series.
US Monster Verse (2014-now) - USA Legendary Pictures reboot, plus King Kong and other characters owned by Toho Co with movies, TV series and animations.
