Kyoryu Sentai Zyuranger

170,000,000 years ago, five ancient human tribes, with the protection of the Guardian Beasts, coexisted with the dinosaurs. This ended when the evil Witch Bandora started a war on the dinosaurs because of the death of her son Kai. Bandora decided that the only way Kai's death could be avenged was if she sold her soul to Great Satan, an evil, almost ice-like head creature who had immense power and who later in the series could be summoned by Bandora. In the end, the five tribes were ruined and the dinosaurs became extinct. The Guardian Beasts sealed Bandora and her minions on the planet Nemesis before going into hibernation. In 1992, Nemesis returned to Earth's orbit. Two astronauts exploring the planet accidentally released her and her minions from their prison. With Bandora free, her arch-enemy, the Mysterious Wizard Barza retreated to his underground lair 2,000 metres belows the apartment building where he worked as a front. There, he revived the five Holy Warriors of Justice he had been guarding, who had been in suspended animation to be awakened when they were needed. These five were each a member of the ancient human tribes, who coexisted with the dinosaurs. With the aid of the Guardian Beasts, the Zyurangers fought Bandora and her Dora Monsters.