Defel

Get it? It's because the humans think the Defel will turn back into humans during a full moon. Hilarious.

The Defel began their journey as a species on a literal hell of a planet, resulting in them evolving to be invisible. This is not a joke. Somehow, they lived long enough to be able to evolve invisibility when not exposed to ultra-violet light. This is also due to the lack of a sun, which would usually cause extremely low temperatures, but this is counteracted by an extremely high core temperature.

More advanced Defel often mine near the core, attaining a precious material called Defelstinium. We didn't make the name. Once discovered, many other species tried to harvest the Defelstinium for themselves, to which the Defel said, "Good luck with the extremely high temperatures and extremely dangerous monsters and lack of a sun and whatever."this was an improvised quote

Blind Fighting
Time to use: one round. Defel can use this skill instead of their brawling or melee combat skills when deprived of their sight visors or otherwise rendered blind. Blind fighting teaches the Defel to use its senses of smell and hearing to overcome any blindness penalties.

Invisibility
Defel receive a +2D bonus when using the sneak skill.

Claws
The claws of the Defel can inflict STR+1D damage.

Light Blind
Defel eyes can only detect ultraviolet light, and the presence of any other light effectively blinds the Defel. Defel can wear special sight visors which block out all other light waves, allowing them to see, but if a Defel loses its visor, the difficulty of any task involving sight is increased by one level.