Kiana Madeira as Sarah Fier / Deena

Benjamin Flores Jr. as Henry / Josh

Olivia Scott Welch as Hannah Miller / Samantha Fraser

Ashley Zukerman as Solomon Goode / Nick Goode

Darrell Britt-Gibson as Martin

Elizabeth Scopel as 'Real' Sarah Fier

Randy Havens as George Fier

Julia Rehwald as Lizzie / Kate

Matthew Zuk as Elijah Goode / Mayor Will Goode

Fred Hechinger as Isaac / Simon

Michael Chandler as 'The Pastor' Cyrus Miller

Sadie Sink as Constance / Ziggy Berman

Emily Rudd as Abigail / Cindy Berman

Lacy Camp as Grace Miller / Mrs. Fraser

McCabe Slye as Mad Thomas / Tommy Slater

Jordana Spiro as The Widow / Mrs. Lane

Jeremy Ford as Caleb / Peter

Patrick Roper as Union Townsman 1

Robert Bryan Davis as Union Townsman 2

Lynne Ashe as Union Townswoman

Charlene Amoia as Beth Kimball / Rachel Thompson

Mark Ashworth as Jakob Berman

Todd Allen Durkin as The Watchman / Officer Kapinski

Ryan Simpkins as Alice

Noah Bain Garret as Skull Mask

Keil Oakley Zepernick as 'Shame Killer' Isaac Milton

Emily Brobst as Billy Barker

Kevin Waterman as 'The Milkman' Harry Rooker

Jordyn DiNatale as Ruby Lane

Ted Sutherland as Young Nick Goode

Lloyd Pitts as Nightwing Killer

Gillian Jacobs as Adult Ziggy / C. Berman

Daniel Thomas May as Officer Kuzio

Meghan Packer as TV Anchor

Nilah Blasingame as Highschool Kid

Rachel Doman as Queen of Air and Darkness Girl