<Li> Jason George as Ben Warren: A rookie firefighter at Station 19 and a former anesthesiologist - turned - surgical - resident at Grey Sloan Memorial Hospital . He is married to Miranda Bailey . </Li> <Li> Grey Damon as Jack Gibson: Lieutenant at Station 19 . He is passionate, energetic, and fearless . He's one of Station 19's Co-Acting Captains, with Herrera </Li> <Li> Barrett Doss as Victoria "Vic" Hughes: A younger firefighter at Station 19 . </Li> <Li> Alberto Frezza as Ryan Tanner: A police officer at Seattle PD . He and Andy are longtime friends and had a romantic relationship in high school . </Li>

Who becomes the new captain on station 19