Lea is a genie that can grant three wishes, although she can also apparently grant many more than that if her master wishes for more wishes. While Lea doesn't allow for unlimited wishes, she may allow her master to use his third wish to wish for three more wishes. Lea wears green earrings and red clothing. She has no feet, instead her lower body flows in the air into a swirl tail, like a ghost.
As mentioned, Lea is kind, and speaks in a soft tone. While she does offer wishes mostly free of Da Rules, she still has her limits, and often tries to warn her master about using more "dangerous" wishes. Although, she can occasionally mock other fairies, like calling Stan "grandpa".