Of course a show about firefighters will be cast with *hot* stars, and here's the final one.



The 10-episode "Grey's Anatomy" spinoff, set in a Seattle firehouse, just added "Dead of Summer."



According to TVLine, his character's name is Ryan. Deadline added that Ryan is a police officer ... so, not a firefighter? Another man of the law, it seems.



Frezza is the final series regular coming to the show, following the previously announced stars Jaina Lee Ortiz, Miguel Sandoval, Grey Damon, Jay Hayden, Okieriete Onaodowan, Danielle Savre, and Barrett Doss. That's not even counting Jason George's Dr. Ben Warren, who is truly making this a spinoff by leaving "Grey's Anatomy" this season to spin-off onto the new show.



The as-yet-untitled series will debut as a backdoor pilot at some point this fall during "Grey's Anatomy" Season 14. The show will then premiere midseason 2018.



"Grey's Anatomy" airs Thursdays at 8 p.m. on ABC.



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