Winona Ryder Joyce Byers Actor David Harbour Chief Jim Hopper Actor Millie Bobby Brown Eleven Actor Finn Wolfhard Mike Wheeler Actor Gaten Matarazzo Dustin Henderson Actor Caleb McLaughlin Lucas Sinclair Actor Noah Schnapp Will Byers Actor Sadie Sink Max Mayfield Actor Natalia Dyer Nancy Wheeler Actor Charlie Heaton Jonathan Byers Actor Joe Keery Steve Harrington Actor Maya Hawke Robin Buckley Actor Priah Ferguson Erica Sinclair Actor Brett Gelman Murray Actor Cara Buono Karen Wheeler Actor Matthew Modine Dr. Brenner Actor Jamie Campbell Bower Peter Ballard Actor Joseph Quinn Eddie Munson Actor Eduardo Franco Argyle Actor Paul Reiser Dr. Owens Actor Dacre Montgomery Billy Hargrove Actor Andrey Ivchenko Grigori Actor Francesca Reale Heather Holloway Actor Cary Elwes Mayor Larry Kline Actor Jake Busey Bruce Actor Sean Astin Bob Newby Actor Michael Park Tom Holloway Actor Matt Duffer Executive Producer Ross Duffer Executive Producer Shawn Levy Executive Producer Dan Cohen Executive Producer