Lilly is 13 and is naturally timid, quiet, and gentle. However, beneath her anxious demeanor lies incredible inner strength. While others might collapse under terror, Lilly consistently refuses to give up. Lilly is traditionally feminine in her style—frequently wearing cardigans, skirts, and ribbons in her hair. She is detail-oriented, cautious, and deeply loyal to the people she cares about.

Rich is 13 and friendly, lively, and eager to make connections. He acts as the social glue among the kids, often helping de-escalate arguments and bringing people together. He has a habit of bluntly stating negative or harsh truths without realizing how discouraging or awkward he sounds. He has a neatly trimmed, classic 1960s crew-cut or low fade, a light olive complexion, and an open, youthful expression that matches his approachable, outgoing personality.

her natural curly black hair is often styled in classic early-1960s preteen looks, ribbons with pressed shoulder-length curls. She has very expressive eyes that carry a determined, protective glare when standing up for her friends. Ronnie is a headstrong 13-year-old girl who isn't afraid to speak her mind to her peers or authority figures, standing up for what she believes is right.

Marge is 13 years old and has a gentle, compassionate nature. Even when pressured by peers to distance herself from "Loony" Lilly, Marge can't bring herself to be cruel and eventually chooses loyalty over social status. Marge has light brown/dirty blonde hair, hazel-green eyes, and a classic, preppy early-1960s middle school look.

Despite his being 13 and nervous tendencies and desire for safety, Teddy stands by his friends—especially his conspiracy-obsessed best friend, Phil Malkin, and Lilly Bainbridge. When danger escalates, he stays to help investigate the sewer networks and local hauntings. Teddy has a slim build, fair skin, sharp facial features, light blue-grey eyes, and straight, dirty-blonde hair styled in a clean 1960s cut. Teddy dresses in classic 1962 preppy attire. He is typically seen in neatly buttoned polo shirts, short-sleeved collared button-downs, tailored trousers, and clean loafers or sneakers.

Phil is 13 and he speaks fast, jumps to wild conclusions, and constantly brings up odd facts or speculative ideas. His eccentric personality brings humor and levity to the group, even during tense situations. Phil has a lean, youthful build, bright expressive eyes, light skin, and medium-length wavy dark brown hair that gives him a slightly unkempt, energetic look.

Will is quiet 13 year old reflective, and possesses a sharp eye for detail. Will is deeply attuned to his surroundings and quickly picks up on the unsettling atmosphere surrounding Derry. Will is a young Black teenager with short dark hair, warm brown eyes, and an earnest, expressive face that often reflects his thoughtful, observant nature.