<Li> Noah Gray - Cabey as Elliot Dixon, a second - year resident in the ER (season 3; recurring season 2). </Li> <Li> Emily Tyra as Noa Kean, an ER resident who embarks upon a relationship with Mario (season 3; recurring season 2) </Li> <Li> Emily Alyn Lind as Ariel (season 3; guest seasons 1--2) </Li> <Li> Moon Bloodgood as Rox Valenzuela, a Los Angeles Fire Department paramedic . Rox is Ethan's ride - along partner (season 3). </Li>

Who plays willis's father on code black