Dr. Conrad Hawkins is an attending physician and chief resident at Chastain Hospital. The former Marine medic is a brilliant, arrogant diagnostician who fiercely breaks hospital rules to save patients, harboring PTSD from Afghanistan. he has an athletic build, short blonde hair, and blue/hazel eyes. He wears fitted dark scrubs, leather wristbands, and rings, balancing a cynical, tough-love mentorship style with deep, unwavering compassion. He is married to Nic Neven and they have a daughter named Georgina "Gigi" Hawkins who's around the age of four years old

Nicolette "Nic" Nevin is a Nurse Practitioner at Chastain Park Memorial Hospital in The Resident. Known for her "steel spine," she is a fierce, compassionate patient advocate who bravely fights hospital corruption and systemic flaws while handling deep personal trauma. Nic has blonde hair, hazel eyes, and a tall, slender build. On duty, she wears professional dark scrubs; off duty, her style is classic and minimalist. She is pragmatic, resilient, and dedicated. She is also married to Conrad Hawkins and they have a daughter named Georgina "Gigi" Hawkins who's around the age of four years old

Dr. Mina Okafor is a brilliant, independent Nigerian surgical resident at Chastain Park Memorial Hospital. Known as the top expert on the Titian robotic surgery device, she also runs an illegal clinic out of her home for uninsured neighbors. Mina is ruthlessly honest, blunt, and analytical, prioritizing logic over emotion. Behind her tough, hardened exterior and low patient satisfaction scores lies a deeply loyal and compassionate heart with high moral integrity. She has a statuesque, commanding presence as a dark-skinned Black woman. While usually in hospital scrubs, she has a highly fashionable personal style and often wears bold, distinctive jewelry.

Dr. AJ Austin ("The Raptor") is an elite cardiothoracic and trauma surgeon at Chastain Park Memorial Hospital. He is a physically imposing Black man with a powerful build, a neat beard, and sharp, stylish attire unless on shift then he's predominantly seen in powder blue scrubs Brash, volatile, and fiercely confident, AJ has a massive ego but couples it with unmatched surgical skill. Beneath his filterless, arrogant exterior lies a deeply caring mentor and fiercely protective advocate for his patients.

Dr. Devon Pravesh is an attending physician at Chastain Park Memorial Hospital. A brilliant Harvard Medical grad, he evolves from a rigid, by-the-book intern into a seasoned clinical trials specialist. He is idealistic, highly ambitious, and deeply empathetic, though the broken healthcare system tests his ethics. He is a handsome South Asian man with an athletic build, dark brown eyes, and short black hair, typically seen in blue scrubs or a white coat.

Dr. Randolph Bell is a distinguished surgeon, former Chief of Surgery. He is an older, fit gentleman with sharp eyes, graying hair, and a commanding presence, though he later develops an MS hand tremor. Initially an arrogant, corrupt, and self-serving villain nicknamed "HODAD" due to covering up surgical errors, he undergoes a massive redemption arc, evolving into a fiercely loyal mentor, advocate, and caring husband to Dr. Kitt Voss

Dr. Kit Voss is the CEO and former Head of Orthopedic Surgery at Chastain Park Memorial Hospital. She's fearless, principled, and fiercely brilliant, she tackles corruption and medical crises with sharp wit and unwavering determination. A meticulous surgeon and warm mentor, she is a loyal ally to her staff and husband, Randolph Bell. Kit has an elegant, polished look, characterized by her styled short brown hair, sharp features, a poised British demeanor, and chic professional attire.

Jessica Moore is a dedicated scrub nurse at Chastain Park Memorial Hospital, she is famous for being Dr. Bell’s favorite OR nurse before he retired his title as Chief of Surgery Jessica is an expressive, lively, and gossip-loving professional who stays fiercely loyal to her colleagues. She has a warm appearance with dark brown hair and blue/green eyes, usually seen in hospital scrubs. She marries Dr. Irving Feldman.

Dr. Irving Feldman is an Attending Emergency Medicine Physician at Chastain Park Memorial Hospital. He has short, dark curly hair, dark eyes, and wears light teal scrubs with a lab coat. Known for his witty, quirky, and kind personality, he serves as comedic relief, playing ER Bingo to lighten the mood. He is a well-liked colleague and a devoted husband to Jessica Moore, balancing his lighthearted humor with strong dedication to patient care.