My Monsters Can Level Up

After transmigrating to a world of sci-fi interstellar warfare, Lei Shen, the greatest beggar and whistleblower of his previous life, found himself in the body of a low-ranking slave soldier on Blood Cave Planet, someone everyone bullied. Here, advanced civilizations held life and death in their hands, mech aristocrats crushed everyone in their path, and low-ranking slave soldiers could only pilot clumsy mechanical beasts of war. They were cannon fodder slaves on the interstellar battlefield, struggling to survive with lives as worthless as weeds. The original owner had fought for three years and was just seven days away from retirement and freedom as a mercenary when he died beneath the blast of a shockwave bomb during a beast horde attack. That was when Lei Shen arrived and bound himself to the King of Jungling System! Other people's war beasts were imposing, swift, and deadly. His, the “Walking Coffin,” a steel-armored dragon everyone despised from the start, underwent an incredible transformation with the System's support. It evolved from a scrap-metal tank into a Dragon King fighter capable of crushing everything across the sea of stars! From a low-ranking slave soldier at the mercy of others to a free mercenary who roamed the ruins and raced across the stars, Lei Shen unlocked a portable bone-gold space and acquired top-tier Pym particle technology and superenergy crystals. He steadily built up his strength and broke free of the shackles of a low-level civilization. A useless beast rises to greatness, and jungling brings unrivaled power! From then on, he would command the rise and fall of the stars and become a god of mechs. Through endless slaughter and overwhelming resources, he would rise from a lowly insect to the supreme ruler of the interstellar realm, claiming the entire universe!