Fiona Gallagher is a 25 year old naturally tall, slim woman with olive skin, dark brown eyes, and long-to-shoulder-length brown hair. She typically wears low-cost clothing that reflects her working-class life in Chicago. She works multiple low wage jobs, pays the bills, and handles crises head on while managing an unreliable, alcoholic father (Frank) and an absentee mother, She dropped out of high school at age 16 to raise her five younger siblings

Ian is a young man of 18 years old with bright red hair, green eyes, and a lean, athletic build. His style is typical of a working-class Chicago resident—practical, casual, and rugged. He often has an intense, focused, or stoic gaze, reflecting his driven and resilient personality. Outwardly mild-mannered and quiet during calm periods, his physical presence shifts dramatically during his bipolar episodes. He is hard-working, goal-oriented, and sensitive, often trying to find order and stability amidst family dysfunction through structured environments.

Phillip "Lip" Gallagher is a brilliant yet deeply self-destructive 20 year old academic genius hailing from the South Side of Chicago. He struggles with deep-seated guilt and a subconscious belief that he does not deserve to escape his turbulent upbringing. He has a distinct, scruffy, street-kid appearance characterized by his lean build, messy hair, and casual, worn-out clothing

Carl Gallagher is a 15 year old teen with light blue eyes, dark brown hair, often styled short or messy, maintains a trim, fit frame typically Wears casual, worn-out street clothes, hoodies, and oversized shirts. He occasionally acts arrogant, selfish, and lacks empathy during his early delinquent years. And he adapts to his harsh environment on the south side of Chicago, using his street smarts to navigate dangerous situations. But he cares deeply about his family and steps up to protect or support his siblings whenever they face hard times.

Debbie Gallagher is 14 years old and she has red hair, brown eyes, and soft, rounded features. Going through a teenage growth spurt, she swaps loose, childish clothes for tighter, mature outfits. She starts wearing heavy makeup like thick eyeliner, shifting her expressions from bright to guarded. Driven by neglect, she aggressively rejects authority. Desperate to fit in and feel loved, she becomes deeply insecure, adopts a rebellious persona, and grows highly volatile. Her naivety in romance leads to delusion, and she begins using manipulation and lies to get her way.

Francis "Frank" Gallagher is the 55 year old manipulative, deeply alcoholic patriarch, He typically sports messy, unkempt, thinning hair or a beanie, paired with regular stubble or an untrimmed beard and he wears dirty, worn-out, and mismatched layers, often looking disheveled or soaking wet from various misadventures. Frank operates almost entirely on self-interest, prioritizing his next drink or scam over his family's well-being and is Extremely selfish, charismatic, resourceful, and entirely neglectful of his parental duties, frequently leaving his older children to raise the younger ones.

Veronica "V" Fisher: is a tall, athletic 35 year old African-American woman with a toned, curvaceous physique. She has striking eyes and a youthful complexion. Her style is bold and glamorous, featuring versatile braided or curly hair, sharp makeup, hoop earrings, and form-fitting outfits. She is a bold, fierce, and fiercely loyal neighbor who acts as a dependable anchor for the chaotic Gallagher family. Sharp-witted and highly resourceful, she manages The Alibi Room alongside Kevin Ball with street smarts. While she starts as a pragmatic voice of reason, the stresses of motherhood, financial struggles, and business choices make her more erratic over time.

Kevin "Kev" Ball is a lean 34 year old man with an athletic build. Groomed dark beard and short buzz cut. Often wears V-neck tees, tank tops, hoodies, or comfy loungewear/sweatpants while caring for his twin infants on Chicago's South Side. Kev is a big-hearted, fiercely loyal "gentle giant." Despite an intimidating build, he has a sweet, golden-retriever personality. Lacking formal education, Kev balances dyslexia and naivety with strong street smarts and deep emotional intelligence. As Veronica's devoted partner and a loving father to their twins, he serves as a morally grounded, non-toxic anchor in a chaotic world.

He's the youngest Gallagher at age four