who plays the character mentioned above?
Sara Ramirez.
Introduction
The character was created by series' producer Shonda Rhimes, and is portrayed by Sara Ramirez. 
does callie baby die in season 7 episode 18 No
Sara Ramirez. Sara Ramirez Sara Ramirez
Song Beneath the Song Song Beneath the Song Song Beneath the Song
Plot Plot Plot
En route to a weekend getaway, surgeons Callie Torres (Sara Ramirez) En route to a weekend getaway, surgeons Callie Torres (Sara Ramirez)  (Sara Ramirez
wiki:2720646
Callie Torres [SEP] Introduction
Calliope Iphegenia Torres, M.D. is a fictional character from the medical drama television series "Grey's Anatomy", which airs on the ABC in the United States. The character was created by series' producer Shonda Rhimes, and is portrayed by Sara Ramirez. She was introduced in season 2, as a senior orthopedic resident, as a love-interest for intern George O'Malley (T. R. Knight). Eventually becoming an attending orthopedic surgeon, the character was originally contracted to appear on a recurring basis, but received star-billing in season 3. Torres was initially conceived as a love-interest, and eventual wife, for O'Malley, and was created to be disliked by her colleagues.