Jamie Newton is a 5-year-old sitting charge of the BSC that the members often look after. He has a 1-year old sister named Lucy Newton. He is one of the club's favorite clients.
Kristy, Mary Anne, and Claudia baby-sat for Jamie even before the BSC began. He is smart, but not energetic, affectionate, and hardly ever cranky. He attends kindergarten and his best friend is Roger.
Jamie is one of the younger players on Kristy's Krushers and tries hard, but can't catch the ball. He is at that stage where he wants to do everything himself even though he's not great yet at things such as buckles, buttons, and shoelaces.
Jamie adores his baby-sitters (he calls Claudia "Claudee") and Charlotte Johanssen. His favorite sandwich is toasted peanut butter and honey. He also likes Band-Aids. He had the chicken pox and has a chicken pox scar on his cheek.
He was afraid of Halloween, but Jessi reads him a book called "Georgie's Halloween" to help him overcome his fear. Jamie gets a new bike which is red with white racing stripes with training wheels. He is afraid of falling when twigs and leaves are in his way. He takes the training wheels off his bike because he thinks they're babyish, but puts them back on after he falls.
Jamie participated in the plastic weight-lifting event BSC Mini-Olympics. He has an invisible friend named Boris, who lives under the stairs of their house. He and Lucy attended the Spring Dance at the Stoneybrook Community Center where Jamie dances with his mother.
At first, Jamie was jealous of Lucy when she was first born, but later starts to adore her. Jamie has a playground and set of swings in his backyard and plays on them sometimes. Jamie and Lucy are two of Kristy and Claudia's favorite baby sitting charges. He is friends with Myriah and Gabbie Perkins. He also says "hi-hi" to everyone and loves to play G.I. Joes. He used to hate Lucy but now he adores her.