But why it was unaccounted as part of the Super Sentai franchise later on? Turns out that unlike the rest of the earlier Super Sentai shows, Ninja Captor was produced by a different staff who did the Super Sentai series. Also, the inclusion of Ninja Captor in the magazine scan might be a mistake by the editors of the magazine back in the day.
Take note, even if Goranger and JAKQ were not labelled as Super Sentai during the time that term was introduced in Sun Vulcan's run in 1981, Aka Ranger and Spade Ace were part of an official Red Warrior picture.
In case Toei Company, Ltd. decided to add include this series in the Super Sentai franchise, there will be four ninja-themed Super Sentai shows to date. To those interested in watching it, four volumes of the DVD is available for purchase.
[Source: 4chan's /m/ via Valsag Fantasy (link 2), Wikipedia]
Originally posted on Orends: Range back in October 16, 2011.