The Princess Joins Up
With the return of GoLion, the universe once again has hope against the evil Galran Empire, but the residents cannot be convinced to join the resistance. Daibazaal sends a new and more powerful Beastman nicknamed “Death Hell” to destroy GoLion once and for all. The battle is on as Princess Fala joins the fight and transforms the decaying Castle Altea into the incredibly fortified Castle Gradam! Source: crunchyroll
Aired 01/04/1981EP 5 - The Princess Joins Up

Go Lion
Golion, a powerful sentient robot, abuses his great powers by attacking and killing creatures known as Deathblack Beastmen, boasting that no one could defeat him. A divine space being punishes Golion for his arrogance and abuse by seperating him into 5 different lion robots. In the year 1999, a group of 5 young men return to Earth after a space voyage, only to find it ravaged by nuclear war. After encountering the alien race known as the Galra, the 5 youths end up on the planet Altea, and learn that the 5 lion robots that Golion was split into are in hibernation in various parts of Altea. Somehow, they must reunite the lions and form Golion, the only hope for the human race.