The King of Braves GaoGaiGar

In 2003, a mysterious mechanical lifeform known as "EI-01" appeared, shot down the spaceship of astronaut Lion Kai, and then vanished on Earth. At the same time, a mysterious mechanical lion named Galeon appeared and rescued Lion Kai. Galeon brought with it a power source called the G-Stone and an infinite data circuit network. Besides reviving Lion Kai and transforming him into a cyborg, Galeon also introduced a series of technologies beyond Earth's understanding and information regarding the mechanical lifeforms. To combat these threats, the Japanese government established the Earth Defense Brave Team 3G, Gutsy Geoid Guard. Two years later, the mechanical lifeforms launched their official invasion, and the future of Earth came to depend on the members of the Earth Defense Brave Team 3G, setting the story in motion.