Hm... they can be capricious and willful, and often mischievous. I believe there are stories of them stealing human babies and living in mounds. But there are also stories where they are helpful. [Like Tinkerbell... and the fairy that Fuu has personally met is capricious, willful, and helpful all at once. Fuu doesn't know if Disney counts.] Very strongly magical beings, too.

Ah! That is something I have never heard of before. Is it a form of magic?