Scientific Name: N/A
This animal is usually found flying in the upper altitudes of Maria and only appears when you are in an aircraft, or on high points on mountains.
Called the king of the sky, this animal is very dangerous. It will attempt to attack and destroy any aircraft that is close to it. It is hard to hunt. If you are on a snowy mountain peak, Caelum Rexes can also appear, preferably in Canyon (Redstone) and Forest. They never land.
Not much is known about their behavior, so if anyone has any information, please contribute.
It is believed by some, though, that they are responsible for the crash-landing.