The Elves were one of the two species that lived on FNC-13324 within the survival horror game: Planet of Bloodthirsty Santa.
None are ever truly seen, but as Santa looks very much like its Earth counterpart, it is presumed that the Elves resemble their earth counterparts as well.
Prior to the Human miners arrival on the planet, the Elves lived in villages on the planet with Santa peacefully, considering him as the nicest in their village. Overtime they began noticing odd behavior with him, and eventually Santa rampaged through their village, and slaughtered all of them.
As none are seen alive when the humans arrived, it is assumed they became extinct thanks to Santa's murderous rampage.