A smart, impatient, sarcastic, and seemingly naive boy who lives in New York City. He is a kind and sensitive boy, but reveals a quick temper when provoked or impassioned. He often feels unappreciated and uncared for by his parents, mainly due to the amount of attention his brother requires. In the first book, he is nine years old and in the fourth grade, and in Double Fudge he is twelve and in seventh grade. He has a habit of imagining things, oftentimes thinking up TV ads for concepts he has just been introduced to (a trait likely inherited from his father as that is his career). He likes to collect things, such as baseball cards. Peter tries to make it very clear that he despises his brother, but it is obvious that he truly cares for him.
Fudge is Peter's little brother. Disaster follows him everywhere he goes, often making a spectacle of himself and setting a bad image to his family. Some of his best-known escapades in the series include throwing temper tantrums (most notably at the shoe store), fingerpainting with mashed potatoes at a diner, scribbling all over Peter's transportation committee poster, and ultimately, swallowing Peter's small pet turtle. Although Fudge is spoiled, will often throw tantrums, and act very immature, he later becomes very intelligent for his age (as first revealed in Superfudge). Later still, he becomes very imaginative like his brother Peter. Thus, he eventually develops from a spoiled and demanding toddler into a less spoiled and much kinder boy with a vivid imagination and a strong desire to learn things.
Peter and Fudge's baby sister, born in the second book,she is 1 Super Fudge. Fudge is jealous and hates her in the beginning, even attempting to exchange her for things such as money or a two-wheeled bicycle. Right before the Hatchers move to Princeton Fudge hides her in a closet. Tootsie is rather playful, curious and likable. Her first word that she ever spoke was "Yuck" when she hears Peter say it when he is changing her diaper. Then she says "Nu Yuck," when the family decides to go back to New York City. She eventually learns more words and likes to repeat what some people say. She especially likes to make animal noises when she hears somebody saying the name of an animal. In the third book, Tootsie walks across Frank Fargo's paintings before they dry, leading Fargo to create a whole series of paintings featuring Tootsie's footprints on canvas, called "Baby Feet." In Double Fudge, when the Fargos move downtown, the Hatchers learn she can't pronounce "sh".
Mother of Peter, Fudge, and later, Tootsie. She is a stay-at-home mom who later becomes a professional dental assistant. She always does her best to be a mother to her children, although she tends to be more partial towards Fudge. She becomes related to the Tubman family when her mother, Muriel, marries Bertram "Buzzy Senior" Tubman in Maine.