Kiana Madeira as Deena

Olivia Scott Welch as Samantha Fraser

Benjamin Flores Jr. as Josh

Julia Rehwald as Kate

Fred Hechinger as Simon

Maya Hawke as Heather

Charlene Amoia as Rachel Thompson / Sunnyvale Customer

David Thompson as Ryan Torres

Noah Bain Garret as Skull Mask

Darrell Britt-Gibson as Martin

Ashley Zukerman as Nick Goode

Jana Allen as TV Reporter #1

Matt Burke as Football Coach

Christian Bridges as Fun Shadyside Football Player

Matthew Zuk as Mayor Will Goode

Jeremy Ford as Peter

Jaime Matthis as Shadyside Player

Danyon Huntington as Sunnyvale Skullmask

Elizabeth Scopel as Sarah Fier

Tayla Rogers as The Babysitting Twin

Maya Rogers as The Babysitting Twin

Jordana Spiro as Mrs. Lane

Diane Sellers as Check In Nurse

Eric Mendenhall as Nurse Beddy

Todd Allen Durkin as Officer Kapinsky

Jordyn DiNatale as Ruby Lane

Lloyd Pitts as Nightwing Killer

Kevin Waterman as 'The Milkman' Harry Rooker

Emily Brobst as Billy Barker

Keil Oakley Zepernick as 'Shame Killer' Isaac Milton

Michael Chandler as 'The Pastor' Cyrus Miller

Lacy Camp as Mrs. Fraser

Meghan Packer as TV Reporter #2

Gillian Jacobs as C. Berman (voice)

Sadie Sink as Ziggy Berman (uncredited)