Čóheiki R1-gó (E26)

The Ultra Guard extols the virtue of the R1, which is capable of producing the force of 8000 hydrogen bombs, but Dan is chilled at the destructive power, believing it to be an impediment to permanent peace in the universe. Its creator chooses the planet Gyeron, far away and seemingly uninhabited, for a test. But a being from the planet Gyeron mutated to a monster and races toward Earth. (Prime Video)