Mhïyrians were the only known Destroyer race. Originally it was thaught that the five Creator Races were the only original inhabitants of Faerûn, but in the year 1346 the Mhïyrian race was discovered as a sixth original race. Soon after its discovery, the Mhïyrian deity Agôn Mhïyr was summoned forth and almost destroyed all Abeir-Toril. He was stopped by Mystra, at the cost of her own life.
The Mhïyrian alphabet is similar to that of the other creator races, though it has some unique symbols.
Little else is known about the destroyer race, they left very little to be researched.