Trasgu

The trasgo, trasno or trasgu is a mythological creature present in the tradition of several cultures of what is now northern Spain, especially in Galician, Asturian and Cantabrian traditional culture, it is also found in legends of North Portugal. There are similar creatures in the mythologies of other European cultures, such as the "gnome", "sylph", and the "kobold". The origin of this mythologic... (Wikipedia)