Magical Beast

Magical beasts are a race and species of magical carnivorous creatures that live and inhabit other worlds, called "infernal or Demonic worlds", which is why these creatures are classified as demons.

Appearance
Magical Beasts are monstrous creatures that usually have black colored bodies, with strong red eyes and huge sharp teeth. But with the passing of time, it became known that both their appearance and the way they looked, and others such as their abilities, the ability to fly, and their magical powers, varied according to each one, thus demonizing them from demons to demon kings, which are those who have their own consciousness as such, and a tremendous magical power to rule an entire world.

The Earth variants have some resemblance to their relatives. Cid Kagenō described them as a cross between a lion and a bear.

History
According to Mordred's explanations, about 10 million years ago, when there was the first contact between the two worlds, that of one of the infernal worlds, it is speculated that the first magical or demonic beasts, crossed into the other world, ruled by dragons, perishing in the process of struggle and adaptation.

Several decades of millennia later, the remains of the magical beasts were found by the first investigators, scientists and archaeologists from the other world, who began to investigate their origins, but could not find clues or key information about these beings as such. so they decided to use the magical genes of these creatures in perverse experiments and others in the boys and girls they kidnapped, these first researchers and other members would one day become the founders of the Cult of Devils.

Several centuries later, after the defeat of the Demon Diablos, and the distribution of the descendants of the 3 Heroines of the world, the breach between both worlds known by the cult as the "Black Rose", It reopened again during a conflict of the Oriana Kingdom, with the fight of 100,000 soldier of the Velgalta Empire, which caused the Velgata armies to be completely eliminated. Unfortunately, The magical beasts proceeded to slaughter everyone that were in their way, in Orianna's kingdom, until the Cult of Diablos stepped in and closed the Black Rose.

When the Black Rose was activated once more by the cult member, Mordred The 9th Seat Knight of Rounds, manipulated it to summon the Magical Beasts, along with Ragnarok. The Oriana Kingdom would had been annihilated, but the timely intervention of Shadow Garden changed that. Shadow Garden worked alongside the Oriana Kingdom to take out the Magical Beasts while Shadow confronted Ragnarok. The battle ended when Shadow destroyed both Ragnarok and the Black Rose.

Cid Kagenou and Beta would travel through a portal created by the Black Rose and arrived on Earth, Japan. To their surprise, they found the nation completely ravaged apart and populated by Magical Beasts.

Biology
Magical Beasts possessed magical power giving them strength and durability to take on most opponents. Their teeth allowed them to tear the flesh off their prey.

They are deadlier during the night as they are nocturnal in nature.

The beasts are able to curl themselves into black lumps, presumably for safer travel through the Black Rose.

The Earth variants are notably much weaker than their relatives that Shadow was able to kill off hundreds of them with ease. They lived in packs and build nests. Once the nest has reached a certain threshold, the beasts go on a rampage. This is presumably done to split the pack. The beasts would hunt food and gather them, building a new nest. This is called a Stampede. Apex Beast are a sub-species that are more powerful than the standard beast.

The only effective means to kill the creature is to use a sword imbued with magic. It takes at least 10 ordinary soldiers to even subdue it unless they have the Shadow Garden prowess.

Trivia

 * Until now, magical creatures are classified as the oldest and most powerful creatures of all, then below these are Dragons.
 * According to Mordred's explanations, these creatures that inhabit different "hells", rotate without being, one with the other, and as one of these worlds is closer to the center or in front of the other world, the higher it will be, the level of danger it represents.
 * According to the Cult of Diabolos, it is said that in the central parallel world, they inhabit the plane or kingdom of a god, or several.
 * The demon Diabolos, shares certain characteristics with the demonic Beasts, since the means that were used to create Diabolos, come from these demons, (even if it was an accidental result).