Moon Beast

Moon Beasts are reptilianoid organisms that are only known to be created if a meteorite from Luna ends up embedded in an organism's body, causing a lycanthropic change during the night when the moon is out. The transformations will cause a sapient organism to lose all trace of its "humanity" and go on murderous yet completely random rampages. At the same time, the true form of a Moon Beast will be subject to spells of dizziness and nausea.

One becoming a Moon Beast is not a permanent ability, however, and the meteorite fragments will quickly disintegrate into the host's system, causing them to spontaneously combust. Their armored scale plating is impervious to most conventional weaponry, although shards of lunar rock such as the originating meteorite will pierce its hide, in a similar fashion to how werewolves are said to be weak to silver, although very likely for a completely different reason altogether.

Only two Moon Beasts are known to have existed, both having originated on Earth.

Notable Moon Beasts

 * Legendary Moon Beast
 * The Moon Beast

Trivia

 * Judging strictly by the size of the teeth and their needle-like design, it is relatively safe to assume that a Moon Beast would not naturally feast on terrestrial organisms, and would instead feast on fish or fish equivalents in watery environments. While it might be a stretch, one may assume that Moon Beasts - in whatever form they naturally take on Luna - are at the very least amphibious beasts, hinting at subterranean lakes under the surface of the natural satellite.