Se anunciaron los nombres de once nuevos actores y actrices que se suman a la serie precuela de IT.
Los mismos son Alixandra Fuchs (Hatfields & McCoys), Kimberly Guerrero (The English), Dorian Grey (Transplant, Star Trek: Discovery), Thomas Mitchell (Gangland Undercover, Spiral), BJ Harrison (Family Law, Maid), Peter Outerbridge (Batwoman, Saw VI), Shane Marriott (Fargo, Law & Order Toronto: Criminal Intent), Chad Rook (Joe Pickett, Billy the Kid), Joshua Odjick (Little Bird, Wildhood), Morningstar Angeline (Echo, Westworld) y Rudy Mancuso (Música).