Gray's Anatomy

Meredith Grey: General surgeon, Alzheimer's researcher, narrator. Limited screen time.
Miranda Bailey: General surgeon, director of the residency program.
Richard Webber: General surgeon, mentor of the hospital.
Amelia Shepherd: Neurosurgeon.
Jo Wilson: General surgeon and obstetrician.
Atticus “Link” Lincoln: Orthopedic surgeon.
Winston Ndugu: Cardiothoracic surgeon.
Ben Warren: Anesthesiologist.
Simone Griffith: Surgical resident.
Benson “Blue” Kwan: ​​Surgical resident.
Jules Millin: Surgical resident.
Lucas Adams: Surgical resident, nephew of Amelia and Derek.
Wes Bryant: Surgical resident.
Derek Shepherd: Neurosurgeon.
Cristina Yang: Cardiothoracic surgeon.
Alex Karev: Pediatric surgeon.
Izzie Stevens: Surgeon / Resident.
George O'Malley: Surgical resident.
Mark Sloan: Plastic surgeon.
Callie Torres: Orthopedic surgeon.
Arizona Robbins: Pediatric surgeon.
Jackson Avery: Plastic surgeon.
April Kepner: Trauma surgeon.
Preston Burke: Cardiothoracic surgeon.
Lexie Grey: Surgical resident.
Addison Montgomery: Obstetrician and fetal surgeon.
Catherine Fox: Urologic surgeon and president of the Fox Foundation.
Owen Hunt and Teddy Altman: They left at the end of season 22.

It is an American medical drama series created by Shonda Rhimes that premiered on March 27, 2005 on ABC and continues to air in 2026 (with 22 seasons already completed and the 23rd confirmed for October).
The plot follows the professional and personal lives of surgeons at a fictional Seattle hospital (initially Seattle Grace, then Seattle Grace Mercy West, and, from season 9 onwards, Grey Sloan Memorial Hospital). The central focus is Meredith Grey, daughter of renowned surgeon Ellis Grey (who suffers from Alzheimer's). On her first day of internship, Meredith meets Derek Shepherd, a neurosurgeon with whom she has a one-night stand—who turns out to be her superior and married.
Alongside her is the group of interns: Cristina Yang, Meredith's ambitious and brilliant "person"; Izzie Stevens, the sensitive former model; Alex Karev, the rough-around-the-edges but evolving intern; and George O'Malley, the "house guy." Under the supervision of the strict resident Miranda Bailey and Chief Richard Webber, they face grueling shifts, high-risk surgeries, ethical dilemmas, and an intense mix of romances, friendships, and tragedies.
The series balances medical cases with personal dramas: love triangles (Meredith-Derek-Addison), devastating losses (patients, colleagues, and loved ones), disasters (plane crashes, shootings, pandemics), births, weddings, and separations. Characters come and go over the decades—Mark Sloan, Owen Hunt, Callie Torres, Arizona Robbins, Jo Wilson, and many others—as the hospital transforms and the narrative shifts from an almost exclusive focus on Meredith to a more ensemble cast in recent seasons.
With over 450 episodes, Grey's Anatomy has become the longest-running medical drama on American primetime television. It blends romance, humor, melodrama, and suspenseful moments, always with Meredith's voice-over reflecting on life, death, and what truly matters. It's a saga of growth, resilience, and human connection amidst the chaos of a hospital.