Pokémon-Onix

The Onix's body is composed of multiple large gray rocks, forming a serpentine shape with interconnected giant stones. At the top of its head is a long rock horn, beneath which are a pair of black eyes. The rocks gradually decrease in size from the midsection to the tail.

Onix typically resides underground, using its long and sturdy body to dig forward while absorbing various hard objects to strengthen itself. It can reach a speed of 80 kilometers per hour while burrowing, causing the ground to shake continuously with a thunderous sound echoing far and wide. As it ages, the stony parts of its body become as hard as diamonds, albeit black. Due to the presence of magnets in its brain, Onix can navigate underground without losing its way. The older it gets, the smoother and more rounded its body becomes. The tunnels it creates are often adopted by ground-dwelling Pokémon as their homes, and occasionally, Steelix can be found traversing the narrow passages, capturing prey.

Your print settings are as follows:
No supports
10% infill
0.4mm nozzle
0.2mm layer height
PLA material
Any color
Adjustable size
These settings seem well-suited for 3D printing projects using PLA filament. If you have specific size requirements or other preferences, feel free to adjust accordingly. If you have any further questions or need additional assistance, please don't hesitate to ask!