The Frids were a water-breathing species indigenous to Mackar. Due to a natural disaster, a benevolent species (possibly the Celestials) relocated them to Iskalon where they became part of the Iskalonian school. In physical appearance, the Frid were the least humanoid Iskalonian species. They had a fishlike shape, with green scales and bulbous, violet eyes. They had skin flaps on both sides of their mouths, and long, scaly tails. Males had fins atop their heads, but females lacked such fins. The Frid communicated via telepathy; they were incapable of speech. They were pacifistic by nature; they would not even retaliate when attacked.