Catherine Avery (née Fox) is a brilliant urologist at Brigham and Women's Hospital who occassionally comes to Grey Sloan Memorial Hospital to consult on a case or to visit her boyfriend Richard Webber and her son Jackson. She's also the board chairman of the Harper Avery Foundation.
Penile Transplant at Seattle Grace Mercy West Hospital Edit
Catherine Avery first appeared at Seattle Grace Mercy West Hospital when she performed a penile transplant with the assistance of Mark Sloan, Jackson Avery, Meredith Grey, and April Kepner. She said this was the first penile transplant ever done in the United States.
Catherine was a proctor at the boards exams. Her presence seemed to affect Jackson's concentration although in the end, he still passed his boards. She and Richard Webber began a sexual relationship during this time.
They continue to develop this relationship. Following the death of his wife, Catherine sent him a box of cookies and offered companionship. ("The End is the Beginning is the End")