KNT Art at Character Designer Tenko's Blog

[blind2d]

Speaking of Polly/Pururun...https://ameblo.jp/qqgf7he9/entry-12965439264.html 

[rapappathepepper]

While your signature asks "Why doesn't Guido have a stinkin' bell?", I ask why does Polly and Francine have hair... But no one else? I mean... When Polly wears something else that isn't their pizza work clothes or battle gear, there's hair under the helmet, but Guido and Speedy never take them off. Even when they're at a bath house, just wearing towels, they still wear those helmets. 

[KageReneko]

Their traditional hair style don't look as good as Pururun's and Otama's... Also, Yattarou looks taller with his helmet on.

[Blackcat]

Their traditional hair style don't look as good as Pururun's and Otama's... Also, Yattarou looks taller with his helmet on.

The main reason the males always keep their helmets on was lack of funding, heck the upgraded armors were only added at the request of the toy company selling the show toys. In fact said toys is why this show despite not having great rantings was able to last more that Eto Rangers and have a proper ending to the show. KNT did better on reruns but it is not considered a show iconic enough to have any characters cameo in Tatsunoko videogames, not even in that vs Capcom game.

Polly got to be able to get her helmet removed because she has a musical episode and that musical episode was made to help sell a music CD. Heck KNT had way too many music focused episodes to sell CDs and that is one of the reasons it is not as popular as it could have been.

However it was the earliest Anime to do the old Edo mixed with futuristic themes that I could find that wasn't a movie. Something both Saber Marrionete J and Edo Rocket did later. So the show did have some influence.

Also the show upgraded Armors do look a lot like SD Gundam.

[rapappathepepper]

Their traditional hair style don't look as good as Pururun's and Otama's... Also, Yattarou looks taller with his helmet on.

The main reason the males always keep their helmets on was lack of funding, heck the upgraded armors were only added at the request of the toy company selling the show toys. In fact said toys is why this show despite not having great rantings was able to last more that Eto Rangers and have a proper ending to the show. KNT did better on reruns but it is not considered a show iconic enough to have any characters cameo in Tatsunoko videogames, not even in that vs Capcom game.

Polly got to be able to get her helmet removed because she has a musical episode and that musical episode was made to help sell a music CD. Heck KNT had way too many music focused episodes to sell CDs and that is one of the reasons it is not as popular as it could have been.

Woah, this does make a lot of sense... I do tend to forget that KNT was originally just another one of those 80s Animes meant to sell, to materialize, and, yeah. 
Then again, I only really care about SPC, usually. Which was kind of made as a joke. Even though they did do said joke with the same intentions. (toys.)
Thanks for explaining. 

I would like to know more about the production of KNT now...

And yes, the power armors look like SD Gundams. Like, blatantly. A rip off almost. And Kyattou Ninden Teyandee is already in a SD style so... (Super Distorted)