Tom Brewer is introduced as Sydney’s primary love interest and appears as one of the primary narrators. He is described as handsome with a lean build, a strong jaw, and coal-black eyes.

Daisy, also known as Gretchen in the “Present Day” chapters, is characterized by her ability to hide her true nature. Tom describes her as an angelic figure with golden hair and pale blue eyes.

Jake Sousa is a police officer and a love interest for Sydney Shaw. He is described as tall, strong, handsome, and serious, with a hint of gray in his temples.

Kevin is a secondary antagonist who appears only in the “Present Day” chapters. He is described as bone-thin, with long, blond, receding hair that he wears in an unkempt ponytail.

“Slug” is Tom’s childhood best friend and an important supporting character in the “Before” chapters. He is known for his anti-social behavior and is described as having a skeletal appearance with a face full of acne.