Treeprechaun

Treeprechauns are a sapient species of blue-skinned, short-statured humanoids with pointed ears, who protect the trees and forests of planet Eternia.

Their magical abilities allow them to become invisible and to control vegetation and animal life.

They don't seem to be very well-known by the Eternian natives, many of whom are unaware of their existence.

Appearances

 * He-Man and the Masters of the Universe, s01e34, "The Dragon's Gift" (1983)