Winona Ryder Joyce Byers Actor David Harbour Chief Jim Hopper Actor Matthew Modine Dr. Brenner Actor Finn Wolfhard Mike Wheeler Actor Natalia Dyer Nancy Wheeler Actor Cara Buono Karen Wheeler Actor Charlie Heaton Jonathan Byers Actor Millie Bobby Brown Eleven Actor Caleb McLaughlin Lucas Sinclair Actor Gaten Matarazzo Dustin Henderson Actor Matt Duffer Executive Producer Ross Duffer Executive Producer Shawn Levy Executive Producer Dan Cohen Executive Producer