Nymphs
What happens when a wizard jizzes in the woods and no-one’s there to receive it? Nymphs are a result of the magic of bodily fluids melding with areas of latent magic in the environment. They’re the least malicious of the Fae, some even “adopting” families by following them home. When stationary, they look quite human, but they have a strange, alien grace, and a cadence that sounds like they’re wrestling with their own tongue.