Sadie Sink
Christine 'Ziggy' Berman
Emily Rudd
Cindy Berman
Ryan Simpkins
Alice
McCabe Slye
Tommy Slater
Ted Sutherland
Young Nick Goode
Chiara Aurelia
Sheila
Brandon Spink
Young Will Goode
Marcelle LeBlanc
Becky
Eden Campbell
Annie
Michael Provost
Kurt
Drew Scheid
Gary
Jacqi Vene
Joan
Sam Brooks
Arnie
Kiana Madeira
Deena Johnson
Benjamin Flores Jr.
Josh Johnson
Olivia Scott Welch
Samantha 'Sam' Fraser
Gillian Jacobs
C. Berman / Adult Ziggy
Ashley Zukerman
Sheriff Nick Goode
Jordana Spiro
Nurse Mary Lane
Jordyn DiNatale
Ruby Lane
Kevin Waterman
'The Milkman' Harry Rooker
Emily Brobst
Billy Barker
Keil Oakley Zepernick
'Shame Killer' Isaac Milton
Michael Chandler
'The Pastor' Cyrus Miller
Elizabeth Scopel
Sarah Fier
Matthew Zuk
Mayor Will Goode
Meghan Packer
TV Anchor
Jason Edwards
Sunnyvale Cop
Paul Teal
Young Officer Kapinski
Dylan Gage Moore
Jeremy
Jayden Griffin
Cool Sunnyvale Camper
Lana Spraley
Shadyside Prisoner #1
Ja'rell Anderson
Shadyside Prisoner #2
Kenneth Trujillo
EMT
Julia Rehwald
Kate Schmidt (archive footage)
Fred Hechinger
Simon Kalivoda (archive footage)
Alex Huff
Mean Sunnyvale Jailer