| Name | Character | Episodes |
|---|---|---|
| Kaitlyn Dever | Toni | 2 |
| Kaitlyn Dever | Jennifer / Toni | 1 |
| Adria Arjona | Mermaid | 1 |
| Mike Colter | Brian Cooke | 1 |
| Steve Cirbus | Dogg-O | 1 |
| Nadia Alexander | FinalGirl | 1 |
| Nicole Beharie | Annie | 1 |
| Jonathan Tucker | Alex | 1 |
| Hamish Linklater | Joe Keller | 1 |
| Sarah Catherine Hook | Elena Milak | 1 |
| Bill Camp | Stanley Price | 1 |
| Charlie Tahan | Nick | 1 |
| Michael Chernus | Tommy | 1 |
| Nicole LaLiberte | Sharon | 1 |
| Joy Osmanski | Faye / Old Hag | 1 |
| Vanessa Aspillaga | Angela the Hypnotherapist | 1 |
| Marcella Lentz-Pope | Additional Voices (voice) | 1 |
| Adepero Oduye | Amy Cooke | 1 |
| Victoria Leigh | Teen Patient | 1 |
| Alice Kremelberg | Abby | 1 |
| Taylor Schilling | Kate Feldman | 1 |
| Tyson Ritter | Breezy | 1 |
| Kelly Marie Tran | Lauren | 1 |
| Julie Dretzin | Sherman | 1 |
| Susan Pourfar | Rebecca Milak | 1 |
| Alfredo Narciso | Howler | 1 |
| Jack DiFalco | Dagr | 1 |
| Roberta Colindrez | Shawn Greene | 1 |
| Trieu Tran | Sharko Pierce | 1 |
| Mick O'Rourke | Mr. Grey (uncredited) | 1 |
| Marquis Rodriguez | George Keller | 1 |
| Bill Buell | Lee | 1 |
| Jordyn Curet | Tabitha Cooke (voice) | 1 |
| Lauren Bittner | Nancy Breaux | 1 |
| Kyli Zion | Crystina Harris (uncredited) | 1 |
| Tony Crane | Fletcher | 1 |
| Woody Fu | Meagher | 1 |
| Matthew James Ballinger | Donny | 1 |
| Michael Rosen | Josh | 1 |
| Rachel Zeiger-Haag | Cheyenne | 1 |
| Reggie Alvin Green | Attendant | 1 |
| Keilly McQuail | The Woman | 1 |
| Brian Ray Norris | Bereaved Father | 1 |
| Peter Evangelista | Mick | 1 |
| Kathleen Kwan | Liz | 1 |
| Tina Benko | Marianne Westheart | 1 |