Fairy

The  are the race ranked 9th of the Exceed. According to Light Novel Volume 5, they (or at least some of them) are currently imprisoned by the Elves and are being harnessed for their magical abilities

If they were freed from Elven Gard it would be equivalent to the elves selling their national secrets to another race and in the most likely scenario the elves would lose their territory on the Andelusia continent to the Dwarf who they had been quarrelling about it for millennia.

Strengths
During the Great War their respective "Trump card" was called Sprite Tune not much is known about it.

List of Known Members
Hada Fairy Феи 妖精种