Crystalhound

 Crystalhound is the predator of both Petrosapiens and Crystalsapiens.

Appearances
Crystalhound appears to be a large dark blue Vulpimancer-like mutt, with glowing red eyes, and light blue crystals on his elbows, fingers and back. He has four crystals on his back. He has a horn-like crystal on his forehead.

He is shown to be taller than a Petrosapien when standing on all fours. This means he is even taller if he stands up.

Powers and Abilities
Crystalhound possesses extreme durable skin, able to crash into tough materials without feeling any pain. This also makes him immune to a Petrosapien's damage.

Crystalhound's skin can reflect light; This ranges from simple lasers, to powerful Gamma Rays.

Crystalhound's body's mass and strength can easily crush objects such as a Petrosapien or Crystalsapien.

Crystalhound has advanced energy-based material-controlling telekinesis. This means he can levitate any further material, like stone or crystals, (this includes his preys) and fly them around. They gain a blue energy aura when levitated.

Weaknesses
Crystalhound's primary weakness is his horn. It is said to be his center of power and sentience. If it is broken, he dies.

Crystalhound cannot levitate certain materials like metals or molten rock. He also cannot create or generate materials, only being able to control them.

Crystalhound's weight is a problem. This might destroy platforms he is on.

Crystalhound is massively vulnerable to water. It not only can erode him, but his heavy weight can make him sink.

Species
His name is identical to that of his species.

Crystalhounds are born from Petropia's core. They go on hunting Crystalsapiens and Petrosapiens alike, and are known to be the nightmare of Petropia's inhabitants. Crystalhounds exist in very few numbers in the surface, as their true population is in the planet's core. Crystalhounds were killed with the destruction of Petropia, and they were not restored to life afterwards, so they are extinct.

Trivia

 * The idea of a predator of both Chromastone and Diamondhead came from Lego.