Cerberus

The Cerberus is a demonic creature from another world, brought here by a haywire portal. Possessing three heads capable of human speech, which also have their own elemental powers, it is unlike any monster the Research Commission has faced. Fortunately, its arrival also brought the Devil Hunter Nero, a hunter with otherworldly powers to match.

Appearance
The Cerberus resembles a giant, three-headed hound. Chains hang free from anchors rooted in the monster’s back. The Cerberus is coated in a thick layer of ice

Ecology

 * Field Guide Entry

Habitat Range
The King Cerberus comes from the Underworld, a hellish realm where the natural laws need not apply. Cerberi do not roam freely, acting instead as gatekeepers and guardians for important places.

Ecological Niche
The Cerberus tribe protects key areas in the Underworld, typically under the orders of a more powerful demon. Only the King of the Underworld can hope to command the respect of the King Cerberus.

Biological Adaptations
According to Nero, demons do not evolve in response to environmental factors, but according to their desires. Cerberi are territorial to the extreme, so they grew more heads to better spot and tear apart intruders. They also developed elemental powers corresponding to their environment to give them a home turf advantage. The King Cerberus, however, is said to be the apex of its kind, and controls no fewer than three elements.

Behavior
Cerberi are fiercely territorial, to the point that they are set in chains so they don’t chase down intruders in their rabid fury. And while subservient by nature, they are still proud creatures. The King Cerberus is particularly prideful, seeing itself as the apex of its kind and second only to the King of the Underworld. Therefore, while robbed of its normal purpose, the King Cerberus holds itself above all other creatures in this world.