Gar

The Gar are a species of blue-skinned humanoids who live in Eternia. Despite several blue-skinned characters being believed Gar by fans, the only confirmed Gars so far are Sy-Klone, Ditztroyer of the Fighting Foe Men, Shokoti, Adi, and the half-Gar Keldor (a.k.a. Skeletor).

DC
In DC Comics He-Man and the Masters of the Universe #13 2014, the Gars are described as being a noble race of philosophers and craftsmen who came from Anwat-Gar. A thousand years ago, they stood as loyal friends to King Grayskull and celebrated with him at Castle Grayskull when he slew Hordak and banished the Evil Horde to Despondos. However, after the celebrations, the Gar Adi of the Council of Elders led a coup that assassinated Grayskull after it was prophesized that his progeny in the future would bring about destruction.

It was later revealed that Gar Adi was in truth King Hiss.