Sparrow is first mentioned in 13 Curses, in which he is said to have gave Rowan her nickname "Red". Sparrow plays a large role in 13 Secrets, where he shows his fondness for Rowan. His true name is unknown. Rowan and him love each other.
Sparrow has his distinctive chipped tooth and a dimple. About the same age as Red (Rowan), Sparrow has scruffy blond hair, and deep blue eyes, fingernails caked in dirt, and doesn't smell too good, originating from his life on the streets.
Rowan Fox Sparrow stayed for her afterwards and also kissed her.
The 13 secrets (The Coven) Sparrow represents the heart of bravery.