Petrosapien

Petrosapiens are a race of crystalline humanoids from the planet Petropia.

Physiology
Petrosapiens are silicon-based lifeforms slightly taller than humans, with skin made from a blueish-green diamond-like material. They have four-fingered hands, and toeless feet. Male Petrosapiens have a spike on the back of their head and two to six additional ones on their back, while females do not.

There are many different races of Petrosapiens, including Surface Petrosapiens and Subsapiens. Each one has their gem-like colors and shapes.

Surface Petrosapiens are shown to be lean and thin, with square bodies and limbs. Their sharp edges are chiselled like carefully crafted sculptures. Subsapiens are much larger and have wide bodies with thick limbs, with some having crystalline growths on their foreheads resembling pompadours.

Powers/Abilities
While jewel-like in appearance, Petrosapiens have crystalline bodies that make them incredibly resistant to most physical attacks. They themselves are physically enhanced due to their bodies.

Petrosapiens are able to shoot crystalline shards at rapid speed and alter their bodies into crude tools, including blades that cut through most materials.

Petrosapiens can manifest large, almost mountainous formations from either their projectiles, walls, or the ground itself and manipulate them under their control. They can even generate these formations, such as giant spikes, from their own bodies, as well as retract them. Combined with their increased strength, a Petrosapien's shredding appendages can be especially devastating.

Petrosapiens can regenerate, but to a certain extant.

Being living prisms, Petrosapiens can refract, absorb, and redirect light and beam-based weaponry, channeling them through their bodies and projecting them back at their source as beams blasts.

Since Petrosapiens are made out of organic crystals, they are immune to aging. Therefore, they are impervious to the time rays of a Chronosapien or a Chronian, as diamonds do not age.

Due to the alterations Kevin Levin has made to the Antitrix, Crystalfist is more powerful than ordinary Petrosapiens. He can also shape any crystals he generates into anything he desires, such as tentacles.

Weakness
Petrosapiens are particularly vulnerable to sonic vibrations. While a stereo blast might cause them to splinter, certain ultra-high-pitched sound waves can cause them to shatter, including a Loboan's sonic howls and an Evolved Sonorosian's Sonic Disks.

The shards on a male Petrosapien's back can leave them stuck to a wall or on other surfaces that they get knocked into. Females do no have this weakness.

Since their bodies are made of diamond, Petrosapiens can sink in water.

There is limited extent in how much damage a Petrosapien's body can take before cracking or shattering. Once they break completely, no glue in this galaxy or the next can put a Petrosapien back together again.

Omnitrix Transformation
The Omnitrix's Petrosapien representative is named Diamondhead, who first appeared in the original series episode "And Then There Were 10". Diamondhead has appeared in every series.

The reboot version of Kevin 11 has a mutant hybrid equivalent of Diamondhead named Crystalfist, who first appeared in the episode "Franken-Fight".

Diamondhead has also been used by the Prime Timeline Gwen and Kevin, the "What-If" Gwen 10, Ben 10,000, Race Against Time Ben, Albedo, Vilgax's Bioid army, Ultimate Ben, the canon Gwen 10, and Mad Ben.

Etymology
Petrosapien comes from petra (meaning rock) and sapien (meaning intelligent being).