Storm Spirit

Ventus (plural Venti) are storm spirits. The Ventus are the fierce storm winds that Aeolus kept locked away in the hollows of his island.

Ventus, however, is the Latin term. In Greek Mythology Venti are called anemoi thuellai, and fall in the class of daimones, while in the book they're simply described as monsters. According to myth, they were created when Typhon was defeated by Zeus.

Appearance
They are dark, shadowy angels with pale skin, lightning for eyes and black feathered wings blazing with lightning, wind and rain. They come in diferent forms based on how chaotic they are such as humanoid tornados with small wings, as displayed by Dylan and demonic stallions.

The Lost Hero
Dylan is a Ventus. During Jason's encounter with the monster, Dylan procedes to call forth two more of the demonic storm gods. All three Venti then procede to attack the young demigods and the satyr, Coach Hedge, in the name of a mysterious Mistress. Two of them are killed by Jason; however Dylan escapes. They are later attacked by more in the shapes of demonic stallions.