<Ul> <Li> Although he only appeared in the first five episodes of the fourteenth season, Martin Henderson was still billed as a member of the main cast in those five episodes . </Li> </Ul> <Li> Although he only appeared in the first five episodes of the fourteenth season, Martin Henderson was still billed as a member of the main cast in those five episodes . </Li> <Table> <Tr> <Th> Name </Th> <Th> Actor / actress </Th> <Th> Starring seasons </Th> <Th> Recurring seasons </Th> <Th> Occupation at Grey Sloan (or its predecessors) </Th> <Th> Job Title </Th> </Tr> <Tr> <Td> Josephine "Jo" Karev </Td> <Td> Camilla Luddington </Td> <Td> 10, 11, 12, 13, 14, 15 </Td> <Td> 9 </Td> <Td> Surgical Innovation Fellow </Td> <Td> M.D. </Td> </Tr> <Tr> <Td_colspan="7"> An intern on Season 9, Jo Wilson is at first made fun of by Alex Karev, who believes she's a rich girl and nicknames her "princess ." On the contrary, she had a cruel childhood and has had to work very hard in order to get through life and become a doctor . Alex gradually warms up to her, and they become close friends . She starts a relationship with an obstetrician, causing Alex to become jealous . She is set to move in with her boyfriend, but they get in a physical fight in which he becomes severely injured . After she leaves her boyfriend, Alex confesses his love to Jo . They start dating but have relationship issues in Season 11 when she turns down Alex's marriage proposal . Things only worsen when Alex beats up Andrew DeLuca after finding him and Jo in a compromising situation, landing Alex in jail for a brief period . Jo has trust issues with Alex, as she believes he could physically hurt her, but she forgives him once she discovers that Alex had tracked down her ex-husband, Paul, but didn't beat him up . In Season 14, Paul comes to Grey Sloan to sign divorce papers from Jo, whom he calls "Brooke", since she changed her name and ran away when they separated . Paul is still the same manipulative and abusive husband that he was years ago, and that scares Jo into signing the papers . Paul threatens Jo's life, but he is soon after killed during a hit - and - run, freeing Jo of her past . In the Season 14 finale, Alex and Jo get married . </Td> </Tr> <Tr> <Td_colspan="7"> </Td> </Tr> <Tr> <Td> Cristina Yang </Td> <Td> Sandra Oh </Td> <Td> 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 </Td> <Td> N / A </Td> <Td> Cardiothoracic Surgical Fellow, Director of the Board, Grey Sloan Share Holder </Td> <Td> M.D., Ph. D . </Td> </Tr> <Tr> <Td_colspan="7"> Cristina Yang attained a Ph. D. in biochemistry from the University of California, Berkeley and an M.D. from Stanford University School of Medicine . A skilled resident, Cristina has an indomitable passion for cardiothoracic surgery and is almost ruthless in pursuit of her specialty . She is best friends with Meredith Grey and is in a relationship with Preston Burke, until he leaves Cristina on their wedding day . Time later, she enters a relationship with Owen Hunt, whom she marries in Season 7 . At the beginning of Season 9, following the plane crash, she leaves Seattle and works as a cardiothoracic surgical fellow at the Mayo Clinic in Rochester, Minnesota . Like Meredith, she is unable to board a plane due to the plane crash trauma, so they barely see each other . However, Cristina returns to Seattle after Craig Thomas, her cardiothoracic attending and best friend at the Mayo Clinic, dies while performing a surgery . In Season 10, Meredith and Cristina have a falling out due to their different values in life and career paths . Cristina believes that she is more advanced in career because Meredith chose to have a marriage and kids, and Cristina's argument is only strengthened when she is nominated for a Harper Avery award . However, she loses due to the hospital's connection with the Avery family . Yang meets Burke again, and he offers her his job in Zurich . When Cristina leaves, she has an emotional goodbye with Meredith, and she leaves with Shane to go to Zurich . </Td> </Tr> <Tr> <Td_colspan="7"> </Td> </Tr> </Table> <Tr> <Th> Name </Th> <Th> Actor / actress </Th> <Th> Starring seasons </Th> <Th> Recurring seasons </Th> <Th> Occupation at Grey Sloan (or its predecessors) </Th> <Th> Job Title </Th> </Tr>

What is jo's real name in grey's anatomy