Kagaku Sentai Dynaman

Science Troop Dynaman (科学戦隊ダイナマン - Kagaku Sentai Dainaman) was the 7th Sentai series (and 5th Super Sentai). Produced by Toei Company Ltd., the series aired from February 5, 1983, to January 28, 1984, with a total of 51 episodes.

6 episodes were later seen on the USA
Network's Night
Flight and alternately, Nickelodeon's Special
Delivery in 1987-88 as a dubbed parody,
simply titled Dynaman. This was the first time
the Super Sentai Series was ever shown in the US in
dubbed form, the only other one being the dubbed Bakuryuu
Sentai Abaranger episode that was directly translated in Power
Rangers Dino Thunder.

The Jashinka empire (Combination of the Japanese words
for 'evil,' and 'evolution.') rises from the depths of the Earth to conquer
the world. To stop them, Dr. Yumeno assembles five inventors to his Yumeno
Invention Laboratory, and gives them the power to become Dynamen. Each has
their own goal, but as the Science Troop Dynaman, they're united to stop the
Jashinka empire in their tracks. (Wikipedia)