Kreptax appear to be unnatural crossbreeds of elves and goblins though they are related to neither, being creatures of the wild fey. They resemble elf-sized goblins, with the more pointed ears and lighter features of an elf. Kreptax have a dazzling variety of skin colors, including but not restricted to blue, red, orange, yellow, green, and purple, and the colors seem as individual as eye color among humans. Two blue kreptax may very well produce red, purple, orange or yellow offspring, and not all their offspring will be the same color either.

Individually kreptax are more intelligent than goblins. Kreptax often roam in small packs of 2 or 3 when scouting, and a tribe is almost never more than 18 individuals before internal frictions cause the tribe to split.