The Gepture Menace:Steven Universe

So this is based on the show Steven universe however during the crystal gems war stuff. Honestly the show has such a good setting and all that, but the actually show kinda sucks. So yeah uh, synopsis is that... An artificial gemstone code-named Charlie is created to avenge his creators. The Osmmo a species that fought and resist the gems for several thousand years. Though due to the immortal like bodies of the the Gemstones the Osmmos eventually lost this war. However not before creating their greatest machine. The Artificial Gepture Stone.