Kyōryū Sentai Zyuranger
Before Mighty Morphin Power Rangers there was Kyōryū Sentai Zyuranger. the show is pretty much Power rangers when the Rangers Morph. all the costumes monsters zords and rangers are taken from Super Sentai Franchise. Saban became the master at beautifully crafting editing and remuxing Super Sentai footage. Saban had other shows like Mask Rider, VR Troopers, Big Bad Beetle Borgs that were taken from Japanese shows, but none had the lasting power as Power Rangers. What better way to honor the show that created Power Rangers then to give it a Proper HD release.
