Oliver Stark was photographed by Ian Spanier for TheWrap.

On his co-star Ryan Guzman: “People probably think that we’ve known each other from before the show, which isn’t the case. We just immediately got on very well and enjoy each other’s company and have a really good rapport.

We've added screenshots from Episode 10, "Merry Ex-Mas," of Season 2 of 9-1-1.

The inteview of Oliver Stark and Ryan Guzman for Dish Nation.

We've added screenshots from Episode 8, "Buck, Actually," of Season 2 of 9-1-1.

We've added screenshots from Episode 7, "Haunted," of Season 2 of 9-1-1.

We've added screenshots from Episode 6, "Dosed," of Season 2 of 9-1-1.

Oliver Stark and Ryan Guzman visited "Extra" at Universal Studios Hollywood in Universal City, California on October 22, 2018.

We've added screenshots from Episode 5, "Awful People," of Season 2 of 9-1-1.