It's an underrated and unrecognized show. This is absolutely fantastic in anyways. It has a great plot. Great action, great animation, great art.
Plot: It follows around the heroic team called the "Voltes Team" which helps against the war on the alien invaders from the planet Boazan. They ride a machine called "Beast Fighter" that can combine to be a huge fighting robot. I like it when it focuses about equality, love of family, team work, and selfless sacrifice.
Characters: Detailed excellently when it comes to their personalities and their back story. VA is great!
Action value: Retro styled robo-action. Why I like these kind of action!
Art: Retro styled too. Art and animation. Nice in my view.
Overall: 10. Deserves more recognition.