Machine Robo: Cronos no Dai Gyakushuu  

The adventure of a robot prince commences! Planet Cronos is home to highly advanced mechanical beings, governed by the sagacious Master Kirai. However, their tranquil way of life is disrupted when the invading Gandora robots launch an attack. As a result, machines are now engaged in a grand conflict for control of the planet. Rom, the son of Master Kirai, must lead a team of transformable mecha warriors into battle to protect his home.