A sensitive and introspective high school student who narrates part of the story. She is interested in psychology and often feels socially isolated but finds a sense of confidence and rebellion in her friendship with John.

A lonely widower known as "the Pigman," who befriends John and Lorraine after a prank call. He is characterized by his simple kindness and welcomes the teenagers into his life, enjoying their companionship.

Lorraine's strict and often verbally abusive mother who struggles to connect with her daughter. She holds a deep mistrust of men due to past experiences and raises Lorraine with harsh expectations.

An acquaintance of John's, known for his past delinquent behavior and referred to as the "Marshmallow Kid." He becomes a menacing figure in John and Lorraine's life, particularly as they become closer to Mr. Pignati.