Zero Tester

It is discovered that the Armanoid aliens, who intend to invade Earth, are responsible for a string of space mishaps. At the Future Science Invention Center, Professor Tachibana gathers his staff around him and gets five cutting-edge cars ready for Shin, Go, Lisa, and Captain Kenmotsu. The enormous Zero Tester robot, created by combining three Tester vehicles, successfully repels the Armanoid invasion in 38 episodes. A younger audience was targeted by the remaining episodes of the series, which were renamed ZT: Save the Earth! (Chikyu wo Mamotte!) and included an attack by the new Gallos aliens.