Super Robo Galatt

In the future, there are no longer any conflicts on Earth, and possessing weapons is prohibited. An malevolent extraterrestrial named Dothan, who is a part of the Space Real Estate (a branch of the Space Syndicate), has invaded Earth with the goal of annexing its land by force. In the face of the devastating Armoroboids, the cops are powerless (giant robots). A weird robot then bursts onto the scene. The invasion is driven out by this robot's tremendous strength. According to Dr. Kiwi's fabrication to the police, the robot Galatt was under the control of good aliens, and the only one who could get in touch with them to request assistance was him. Galatt was actually a (forcefully) modified version of Michael Marsh's school-riding robot, Jumbow, and had instructed Michael to conceal his true identity by warning him that he would be punished if his possession of the weapon was discovered, all while attempting to bribe the police by pretending to be an intermediary with the aliens in order to obtain money. So, in order to preserve Earth's peace and (unbeknownst to them) earn money for Dr. Kiwi, Jumbow, Michael, Patty, the woman who drives Patyge (Galatt #2), Kamige (Galatt #3), and the young guy Kamil engage in battle against the evil aliens today.