Petrosapiens are crystalline beings whose bodies are formed entirely out of opaque gemstones and whose rock-hard physiologies make them all virtually invulnerable to physical attack. While jewel-like in appearance, Petrosapiens are no pretty boys. Their diamond-hard bodies make these fearsome warriors incredibly tough. Shards of the razor-sharp crystals jut out at numerous odd angles from their heads and bodies, discouraging physical contact, and also act as powerful weapons that can turn a car into confetti in a matter of seconds. Combined with their increased strength, Petrosapiens' shredding appendages can be especially devastating. Living prisms, Petrosapiens can refract light and beam-based weaponry, channeling them through their bodies and projecting them back at their source. 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 - and no glue in this galaxy or the next can put a Petrosapien back together again.
Petrosapien ("Petro-" referring to rocks, "sapien" referring to the vague similarities to humans) is a species from the silicon planet Petropia.
� Ben as a Petrosapien(Diamondhead)Petrosapiens are silicon-based extraterrestrial beings. They are a light shade of green with a diamond body. They have a spike on theback of their semi-cubic head, and 2 on their back. they have 4 digits on their hands, and none on their feet (their feet almost perfectly resemble boots). They have outfits that are more than often half-and-half in color.Diamondhead in Ben 10: Alien Force� Petrosapiens Resurrection in The Secret Of ChromastonePetrosapiens have diamond-hard bodies that can be regenerated. Thus, they are able to alter their bodies (normally their arms) into crude tools, such as blades. Their skin can reflect most energy attacks and few physical ones. Petrosapiens also have other diamond-based powers- shooting diamond shards, being able to cut through most materials, and causing large, almost mountainous formations of diamond. Sadly, their body can be easily shattered by physical impact and sonic waves or sound-attacks. Most Petrosapiens are extinct as their planet was destroyed by Vilgax, part of a promise from him that wasn't kept, very few are still alive. One of few known Petrosapiens left alive is Tetrax, a mercenary that befriended Ben. It is revealed that Petrosapiens come in different shapes and sizes in episode 5 of the series.Gwen as a Petrosapien ("DiamondGwen") Petrosapiens apperantly have a link with Crystalsapiens (Chromastone's species), as Ben's Petrosapien form, Diamondhead, is seen in Ben 10: Alien Force with the torso, legs and powers of a Crystalsapien (plus a purple head, green eyes, and 2 diamond spikes on his chest), but this may have just been a repair after Vilgax smashed Chromastone