- Order: Elder Dragon
- Suborder: Glitter Dragon
- Family: Unknown
- Species: Alatreon
A perfect example of a Dangerous First-Class Monster, Alatreon is an Elder Dragon feared by the gods. Though Alatreon doesn't have any known relatives, it is believed that it and Disufiroa share the same ancestors. There is also rumor a that Alatreon has a Subspecies with the ability to produce blue flames and has white scales that sparkle with blue flames.
From Alatreon living isolated from all other monsters, it is hard to say where it fits in the ecological niche.
Known as the Glittering Black Dragon, Alatreon possesses control over the Dragon, Fire, Thunder, and Ice elements, and is said to be elementally unstable. In its scales are each of the four elements. Alatreon's sheer wing size and natural agility make it an adept flier, it can attack from the air with incredible speed. Another note is that when it is enraged, not only does it glow, it releases energy in the form of whatever move it has used or it will use. For example, when it does an electrical attack it will huff little lightning bolts, and when it uses a fire move it will huff flames. The adaptation of having multiple elements making locals believed the Alatreon possesses god-like powers to overpower strong predators, some locals even believed that the Alatreon is a god or demon which is transformed into an Elder Dragon. However, many of Alatreon's abilities seem to be unnatural, much like the Fatalis.
Alatreon are monsters capable of destroying the world.