Calliope "Callie" Torres is one of the main characters of the medical drama romance series, Grey's Anatomy. She was the Head of Orthopedic Surgery of Grey-Sloan Memorial Hospital and is the mother of Sofia Sloan Torres. She was also best friends with Mark Sloan and the former main love interest of Arizona Robbins.
Arizona Robbins is one of the main characters of the series and Callie's former main love interest.
Mark Sloan was Callie's best friend and father of their child, Sofia Sloan Torres.
George O'Malley was one of the original main characters of the series and Callie's deceased ex-husband.
Erica Hahn was a reccuring character of the series and Callie's former potential love interest in the early seasons.
Penny Blake is a reccuring character introduced in season eleven and Callie's new main love interest.
- She used to secretly live in Seattle Grace Hospital.
- She is close friends with Addison Forbes Montgomery.
- Callie leaves the series by the end of the twelfth season.