For many years in the United States the only tokusatsu available for purchases were "Godzilla" moves on VHS tape. Altough "Ultraman" had been shown on American television and severa other henshhin heroes had been shown in Hawaii and California they were not available for purchase to watch at home, not licensed from legitmate sources anyway. Its only since early 2000s that companies in the US have started to release henshin heroes on licensed DVDs and more recently Blu Ray. I've listed companies which I am aware of that have released various henshin heroes from Ultraman to Super Sentai in the US, unless otherwise noted they are Japanese with English subtitles. I've also included the martial arts action series "Fight! Dragon" and the series about ninja "Shadow Warriors" as well as the Chinese super hero "Inframan". The list is in alphabetical order by company and then chronological order by year the series originally aired in Japan.
Most of these series are from Tsuburaya Productions or Toei Company, Ltd. Sadly not one Toho henshin hero series has been released in the US although Rainbowman and Diamond Eye were aired on television in Hawaii in the 1970s. Apparently Toho does not belive there is an audience for their products other than Godzilla (real name Gojira). None of P-Productions' series have been released in US either. A movie parody of "Denjin Zaboga" is available on DVD.
The first tokusatsu DVDs I ever purchased were the JN Production box sets of the first henshin heroes I ever saw, in Hawaii (in the 1970s), Kikaida, Kikaida-01, Kamen Rider V3 and Inazuman. They added the reboot Kikaida movie later. The only items on this list I do not own myself are BCI's Ultraman, Discotek's Juspion, Mill Creek's rerelease of BCI Ultraman, Mill Creek's heisei Ultraman, not yet released showa Ultraman or any of the Shout Factory releases. I have seen Shout Factory's Ultraman Leo and Kakuranger on their web site and Message from Space on Amazon Prime. I have Mill Creek's Return of Ultraman on preorder and will order Ace, Taro and Leo when availale, also Mebius. I have no interest myself in other heisei Ultraman series. italicized titles are ones I have purchased or plan to in the case of future releases..
Showa Era or Showa Period (1926-1989)
Heisei Era or Heisei Period (January 8, 1989 - April 30, 2019)
Reiwa Era or Reiwa Perio (May 1, 2019 - )
BCI Eclipse (DVD) - no longer exists:
BCI Eclipse went bankrupt in 2009, their properties sold to Mill Creek Enteraintment which rereleased most of these titles. Their demise put an end to the planned release of all Shadow Warrior series (1-6). As far as I can tell Mill Creek Enteraintment has not rereleased Shadow Warriors 1. I have the BCI set. BCI Eclispe DVDs can still be found on Amazon.
Discotek Media (Blu Ray) - known mostly for ANIME
Discotek Blu Ray discs can be found on Amazon.
Image Entertainment (DVD) - no longer exists as it was sold multiple times to other companies
JN Productions (DVD)- Hawaiian company which introduced henshin heroes into Hawaii
Kikaida was originaly released in 9 DVDS each released seperately over a period of months. After all 9 volumes were avaialble a Collector's Edition including all 9 volumes plus a 10th disc featuring the 3D movie was released. I waited for the complete set, which includes old style red and blue 3D glasses. The others series were only released in box sets. The Kamen Rider V3 and Inazuman movies are not included. When first released the Kikaida Collector's Edition Boxed Set was available autographed by Ban, Daisuke (Jiro/voice of Kikaida), because he was in Hawaii celebrating the release. Those autographed sets sold out. JN Productions sells their DVDs and other tokusatsu items on their web site Generation Kikaida as well as on Amazon.
Mill Creek Enteraintment - known mostly for B movies many aquired from BCI Eclipse
Newly Released (Blu Ray):
Planned To Be Released (Blu Ray)::
Ultraman Orb THE ORIGIN SAGA (2016) - February 11, 2020
Return of Ultraman (1971) - February 25, 2020
Ultraman Ace (1972) - May 12, 2020
Ultraman Taro (1973) - Summer 2020
Ultraman Leo (1974) - Summer 2020
Ultraman Mebius (2006) - release date not yet announced
Ultraman Zero (2010) - Summer 2020
Neo Ultra Q (January 12, 2013) - August 11, 2020
Ultraman X (series and movie) (2015) - Summer 2020
Ultraman R/B (2018) (series and movie) - Spring 2020
Mill Creek Enteraintment has licensed the entire Ultra series library from Tsuburaya Productions and plans to release every series They begain with Ultra Q, Ultraman, Ultraman Orb and Ultraman Geed. Seems they plan to release two Showa Era series followed by two Heisei era series every few months instead of in chronological order. Mill Creek's DVDs and Blu Rays can be found on Amazon. If pre-ordered Amazon will not actually charge you until they ship and will charge the lowest price available during the time you pre-ordered.
Shout Factory TV - known for releasing old movies, TV series and music vidoes
Well Go Usa (DVD)