Freddy is an animatronic bear and the star attraction of the original Freddy Fazbear's Pizza opened in 1983, as well as the face and namesake of the company that owns it—Fazbear Entertainment. Freddy takes the role of lead singer and overall performer of the band, standing in the center of the stage. Undisclosed to Fazbear Entertainment and the public, Freddy is heavily implied to be possessed by the restless spirit of Gabriel – a little boy murdered by William Afton. Due to this, Freddy and his likewise possessed bandmates are now seeking revenge against their common killer by attacking any similar-looking adults in the pizzeria after hours in a blind rage, not knowing that they, the children, are being manipulated by William Afton. However, Freddy is evidently friendly towards children and seeks to save his and his friends' own souls as well as any other children targeted by William Afton.

Bonnie is an animatronic rabbit and the guitarist in Freddy's band, positioned at the left side of the stage. Undisclosed to Fazbear Entertainment, Inc. and the public, Bonnie is heavily implied to be possessed by the restless spirit of Jeremy – a little boy murdered by William Afton. Due to this, he and the others are now seeking revenge against their killer by attacking any adults in the pizzeria after-hours in a blind rage. Bonnie is an indigo-colored animatronic rabbit with blue accents, magenta eyes and a squarish muzzle. The color from his muzzle, stomach, and insides of his ears is a lavender color. While Bonnie appears purple in artworks and in Special Delivery, he's shown to be more dark blue than purple in most of the games where he and his counterparts appear, including FNaF World. He sports long articulated ears that are capable of bending backwards and forwards (similar to several other animatronics' ears) and wears a red bowtie with a neck strap that is partially obstructed by his chin. On stage, he carried a dark red guitar (most likely modeled after the Gibson Flying V). Unlike the other characters, he has round teeth and lacks eyebrows. Excluding his head, most of Bonnie's body appears identical to Freddy's, apart from the latter's color. Bonnie, like most of the Classic animatronics (except for Foxy), has no visible teeth on his upper jaw.

Chica is an animatronic chicken and the backup singer in Freddy's band, positioned at the right side of the stage. Undisclosed to Fazbear Entertainment, Inc. and the public, Chica is possessed by the restless spirit of Susie – a little girl murdered by William Afton. Due to this, she and the others are now seeking revenge against their killer by attacking any adults in the pizzeria after-hours in blind rage. Chica is a bright yellow animatronic chicken with a spherically-shaped head, orange beak, magenta eyes, and black eyebrows. On the top of her head are three "tufts" of feathers. She has two talons from each of her orange feet. She wears a white bib that reads "LET'S EAT!!!" in yellow bubble letters, outlined in purple, with the bib flecked with tricolored triangles in patterns of three, and what appear to be tiny stylized pizza slices. Like all of the other animatronics at Freddy's, she has an out-of-place set of blocky teeth sticking up from her lower beak. Her endoskeleton teeth can also be seen in the back of her mouth, though these are only clearly visible in certain angles.

Foxy is a animatronic pirate fox entertainer. He resides at his own separate stage in the pizzeria. Undisclosed to Fazbear Entertainment, Inc. and the public, Foxy is possessed by the restless spirit of Fritz – a little boy murdered by William Afton. Due to this, he and the others are now seeking revenge against their killer by attacking any adults in the pizzeria after-hours in blind rage. Foxy is a large, animatronic fox with crimson, tattered fur. He has yellow eyes, red eyebrows, and three strands of hair from the top of his head. He has a hook for his right hand and his left hand has been worn down to the endoskeleton. He also bears an eye patch that is folded over his right eye, although he is usually seen with it above his eye rather than covering it. He doesn't have a tail. Foxy wears brown linen pants that are especially shredded at the legs. He appears to be damaged, as parts of his machinery are exposed. It can be clearly seen that both his legs, with the exception of his upper thighs, and his left hand is completely bare, exposing the metal endoskeleton underneath. His chest is ripped in various places, showing the endoskeleton beneath, and his arms and stomach are torn apart as well, with tufts of fur on the shoulders. Like all of the other Fazbear characters, Foxy has a set of teeth. Foxy's teeth, however, appear to be the sharpest out of all the animatronics, being similar to those of an actual canine. He's also the only one of the animatronics to have an upper set of teeth which the others lack. It's also notable that, in keeping with the pirate motif, he has several golden teeth and also appears to have some missing, though this may be due to him needing repairs. He also has a hanging jaw that snaps open and closed when he runs. His ears are articulated, able to move back and forth and left to right.