Quetch is one of the four main species of the planet Twinsun. Their shape resembles humand, and they are characterized by a pony tail haircut.
Quetches are scattered on various islands around the planet, and are not concentrated in one place.
It is among the quetches that Sendell implanted a line of chosen ones, capable of rising up if required to defend the planet. Twinsen, the hero of the Little Big Adventure series, is a quetch who discovers that he is the chosen one destined to defeat the tyrant Dr. FunFrock.