Calliope "Callie" Iphegenia Torres is an attending orthopedic surgeon and board member at Grey Sloan Memorial Hospital. She is married to Arizona Robbins, with whom she has a daughter, Sofia Robbin Sloan Torres.

Callie was first introduced as the orthopedic resident who fixed George's dislocated shoulder in the ER.

Callie was a fourth-year resident. At the end of that year, she was named the new chief resident, over Dr. Miranda Bailey and Dr. Sydney Heron. She was later demoted and the position of chief resident was given to Dr. Miranda Bailey.

Almost a year later, Callie put in a request to be made attending upon completion of her residency, as she was the go-to orthopedic surgeon and basically ran the department anyway, but because Dr. Chang was putting off his retirement, the chief couldn't promote her. Callie quit and became a surgeon at Mercy West. She returned and became an attending after the merger.While operating on George, Derek stops working and after a moment Owen asks if anyone knows if George was a donor. George is declared brain dead and Callie stumbles backwards and starts hyperventilating and Owen tries to calm her. Later in the scrub room, Lexie joins Bailey and Callie who look at George and Lexie says the man is too tall to be George. Everyone goes to Meredith to ask her how she knows and not satisfied with her answer, Callie walks into the John Doe's room to see if he has a freckle George had on his hand (shaped like Texas) that Callie used to tease him about. She checks his hand and starts sobbing silently, confirming it is him. Callie and Bailey talk about how it doesn't seem real when George's mother approaches Callie and tells her that it will be too hard for her to decide what happens to George's organs and because in God's eyes Callie is still George's wife then Callie should decide, Callie accepts. She goes to Arizona in the pit for comfort and Arizona advises her to cry, scream, and eat donuts. Callie then decides that she shouldn't choose alone because George loved someone more than her, even while they were married.

6x01MarckComfortsCallie

Good Mourning

Callie tries to convince Alex to tell Izzie what happened to George so she can help decide what should happen to his organs and so that she can say goodbye. After Izzie is told, Callie and Izzie go through the forms and decide George would want to give everything. 9 days later, Callie walks into the chief's office and asks him about her application to become an attending but he says that Dr. Chang is still putting off his retirement so it won't happen. Callie complains that Chang is just a figure head, she is the one who does all the work and is primarily paged and he is just a dinosaur, but the chief yells that he is too. Callie leaves, telling Richard he'll regret it and she deserves to be an attending because she is a superstar. Callie storms into an elevator with Bailey and suddenly breaks down crying. 4 days later, Mark hammers on Callie's apartment door and she comes out sobbing about losing George, having to get a new job and not seeing her friends again and that Arizona keeps bringing her donuts. Mark comforts her and then gets the idea of moving in to the same building as Callie.-Good Mourning

6x02CallieMercyWest

Goodbye

Callie goes into the hall and asks Mark for some wardrobe advice for her first day at Mercy West. After he gives his opinion, she changes in front of them leaving Lexie awkward and shocked. Later at work Callie meets Richard who was admitted after an accident and after confirming there were no big injuries, he just needed sutures, she passed him on to her inter, only on his 8th day of work. She is later approached by Arizona's old patient and her mother that in which Arizona asked her to perform a scan that she had said Mercy West could perform. When she gets home she gives out to Arizona but tells her she did do the tests although nothing abnormal came up. 35 days after George's death, Callie walks into Mark's apartment and into the shower she asks him to find out if the chief is going to take up work at Mercy West because that would be bad for her and he tells her he'll try and find out. She goes to leave but Lexie asks her first how gay she really is on a scale 1 through Gay because she and Mark live next door and Mark is very hot and she just walked on him while he was taking a shower but Callie relaxes her by saying that ever since Mark met Lexie, Callie's breasts were not the first things he looked at when he saw her. After her work day she goes to Joe's bar and relaxes with Arizona.