Charlie is the central character of the story and the daughter of Henry Emily, one of the people connected to the original Freddy Fazbear's Pizza. She has brown hair and is generally portrayed as a young woman with a practical, casual style. Charlie is intelligent, curious, brave, and determined, but her childhood trauma and memories of the past make her emotional at times. She often takes the lead when her friends investigate the mysteries surrounding the old restaurant.

John is one of Charlie's childhood friends and becomes involved in the investigation when the group returns to Hurricane. He has dark hair and an understated, casual appearance. John is thoughtful, protective, and often tries to understand situations logically rather than jumping to conclusions. He cares about Charlie and can be skeptical when the group's theories become difficult to believe, but he is willing to help when danger becomes real.

Jessica is a member of Charlie's childhood friend group who joins the return to Freddy Fazbear's Pizza. She is depicted with light-colored hair in graphic-novel illustrations, and her clothing is modern and casual. Jessica is observant, intelligent, and practical, often thinking through the group's problems. She can be cautious and sarcastic, and she does not always accept an explanation without questioning it.

Carlton is one of the more energetic and humorous members of the group. He has a casual teenage appearance, with short hair in many illustrations. He is talkative, confident, playful, and sometimes makes jokes at inappropriate moments. Although he can seem like he does not take things seriously, Carlton is loyal to his friends and becomes more courageous when the situation turns dangerous.

William Afton is Henry's former business partner and the main villain of the story. He initially appears under the name Dave Miller, presenting himself as a security guard connected to the abandoned shopping mall. As Dave, he looks thin, tired, and somewhat strange, while his true identity is connected to the yellow Spring Bonnie rabbit costume. William is manipulative, cruel, calculating, and dangerous. He hides his crimes behind an ordinary appearance and uses people's trust to get close to them. He also becomes the Yellow Rabbit shortly after vanishing. This character will stop speaking unless the yellow rabbit costume is removed from this character.

Freddy is the restaurant's main mascot, a large brown animatronic bear with a black top hat, a black bow tie, and a microphone. He is designed to look like a cheerful children's entertainer, but his mechanical movements and threatening behavior make him terrifying in the abandoned restaurant. Freddy represents the contrast between the restaurant's happy public image and the dark events hidden behind it. He is one of the dangerous animatronics that pursue the group.

Bonnie is a purple rabbit animatronic with long ears and a guitar-playing performer design. His appearance is meant to be friendly and entertaining, but his stiff movements and unsettling presence make him threatening when the restaurant is empty. Bonnie is one of the animatronics that hunts the characters inside Freddy Fazbear's Pizza. He demonstrates how something designed for children can become frightening when it is separated from its original purpose.

Chica is a yellow chicken animatronic with an orange beak and a bib associated with the restaurant's food-themed entertainment. She is designed to look cheerful and welcoming, but her vacant stare and mechanical movements make her intimidating. Chica is part of the group of animatronics that attacks intruders. Her character contributes to the feeling that the restaurant's old mascots have become something completely different from what the children once knew.

Foxy is a red, fox-like animatronic designed as a pirate, with a torn-looking appearance and a metal hook in place of one hand. Compared with the more polished mascots, Foxy looks damaged and neglected, which makes him especially unsettling in the abandoned restaurant. He is one of the animatronics that threatens the group. His worn appearance helps show how much the restaurant has deteriorated since it was open.

This is a disguise worn by William Afton. While the disguise is in use then William Afton will not speak and will rather be portrayed by The Yellow Rabbit. While in the costume William Afton will try to kill the characters.