Invincible Super Man Zambot 3

The planet Beal was destroyed by a strange force called the Gaizok. The survivors fled to Earth and settled into three families-Jin, Kamie, and Kamikita-collectively known as the Jin Family. Knowing the Gaizok would eventually come for Earth with their giant mechanical "Mecha Boosts," the family built three vehicles that combine to form the powerful Zambot 3. But defending their new home isn’t easy, as the people they protect often turn against them, accusing the Jin Family of being the reason the Gaizok attacked in the first place.