Mirai Robo Daltanias

In 1995, Earth is under the control of the Akron, an alien force from the Saar cluster, with its cities destroyed and survivors living in makeshift settlements. Kento, an orphan, takes refuge in a cave with others to avoid bandits, where they discover Dr. Earl's hidden base. Dr. Earl, originally from the Akron-occupied planet Helios, brought to Earth the advanced Helian robot Daltanius, which gains enhanced power when paired with the robotic lion Beralios. He gives Kento, a descendant of the extinct Helian royal family, the responsibility of leading the resistance against the Akron.