who is nathan riggs in grey's anatomy
Nathan Riggs Nathan Riggs M.D., is a fictional character from the television medical drama Grey's Anatomy which airs on the American Broadcasting Company (ABC) in the United States. The character was created by series producer Shonda Rhimes and is portrayed by actor Martin Henderson. He was introduced in the episode "The Me Nobody Knows". He is a cardiothoracic surgeon who works with April Kepner during her time in Jordan. After bringing a patient to Grey Sloan Memorial Hospital, he is employed there. At the hospital, he forms a romantic attraction to Meredith Grey, now a widow after the death of Derek Shepherd.
Callie Torres Calliope Iphegenia "Callie" 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 two, 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 the third season.