- Kevin Heffernan
- Â Chief Terry McConky 49 episodes, 2019-2023
- Steve Lemme
- Â Captain Eddie Penisi 49 episodes, 2019-2023
- Marcus Henderson
- Â Granville 'Granny' Smith / ... 49 episodes, 2019-2023
- Gabriel Hogan
- Â Ike Crystal 49 episodes, 2019-2023
- Hassie Harrison
- Â Lucy McConky 48 episodes, 2019-2023
- Eugene Cordero
- Â Andy Myawani 36 episodes, 2019-2021
- Heather Mazur
- Â Vicky / ... 18 episodes, 2019-2023
- Christopher Avila
- Â Mickleberry 12 episodes, 2023
- Suzy Nakamura
- Â Linda Price 11 episodes, 2019-2021
- Paul Soter
- Â Wolf Boykins / ... 9 episodes, 2019-2023
- Jamie Kaler
- Â Captain Polonsky / ... 8 episodes, 2019-2023
- Maria Russell
- Â Lt. Salazar 6 episodes, 2019-2023
- Michael Yurchak
- Â Ken Walthers / ... 5 episodes, 2019-2021
- Buck Heffernan
- Â Hunter 4 episodes, 2019-2021
- Joe Pantoliano
- Â Eddie Penisi Sr. 4 episodes, 2020-2023
- Jessica Lowe
- Â Delilah 3 episodes, 2020-2021
- Nat Faxon
- Â Frenchie Willikers / ... 3 episodes, 2019-2021
- Karen Maruyama
- Â Andy's Mom / ... 3 episodes, 2019-2020
- Dennis Gubbins
- Â Waiter / ... 3 episodes, 2020-2021
- Jon Rudnitsky
- Â Polonsky Jr. / ... 3 episodes, 2021-2023
- Jimmy Tatro
- Â Sgt. Shuck 3 episodes, 2019-2020
- Tina Arning
- Â Lola 3 episodes, 2019-2020
- Phil Hudson
- Â "JP" The Nogger / ... 1 episode, 2020-2023
- Jim Rash
- Â CEO Frank Drake / ... 2 episodes, 2021-2023
- Alexie Gilmore
- Â Hunter's Mom / ... 2 episodes, 2019-2020
- Kelsey Heffernan
- Â Kelsey 2 episodes, 2021-2023
- James Paxton
- Â Gene 2 episodes, 2020
- Quinn Heffernan
- Â Quinn 2 episodes, 2021-2023
- Martin Starr
- Â Toethar / ... 2 episodes, 2019-2020
- Carlos Lemme
- Â Kid / ... 2 episodes, 2021-2023
- Tammy Tavares
- Â Jean 2 episodes, 2020
- Jeris Poindexter
- Â Elderly Man 2 episodes, 2019-2020
- Michelle Ortiz
- Â Ophelia 2 episodes, 2020
- Brett Davis
- Â Shorty 2 episodes, 2020
- David F. Park
- Â EMT Parks 2 episodes, 2019
- Inga Cadranel
- Â Fitzpatrick / ... 2 episodes, 2020-2021
- Noureen DeWulf
- Â Donna 2 episodes, 2020
- Jeff Pierre
- Â Captain Tad 2 episodes, 2020
- Pierson Fode
- Â Jan Damme 2 episodes, 2020
- Mikey McKernan
- Â Couch Stoner / ... 2 episodes, 2019
- Joanna Cassidy
- Â Trudy Towers 1 episode, 2019
- Jessica Meraz
- Â Kimmy 1 episode, 2019
- Greg Collins
- Â Mr. Gravatti 1 episode, 2019
- Nika Khitrova
- Â Anna 1 episode, 2019
- Bobby Moynihan
- Â Jumper Jim 1 episode, 2020
- James Grace
- Â Santa Joe 1 episode, 2020
- Andrew Hawtrey
- Â Dad 1 episode, 2020
- Flula Borg
- Â Antonin Aroma 1 episode, 2021
- David Koechner
- Â Bernard Spatchcock 1 episode, 2021
- Robert Costanzo
- Â Enzo 1 episode, 2021
- Yasmine Aker
- Â Anita Worthy 1 episode, 2021
- Stipe Miocic
- Â Stipe 1 episode, 2021
- Gabrielle Lane
- Â Jenny 1 episode, 2021
- M.C. Gainey
- Â Buddy McSwiggins 1 episode, 2023
- Timothy V. Murphy
-  Gerkins Richárd 1 episode, 2023
- Chris Reed
- Â Frank 1 episode, 2023
- Jordyn Chang
- Â Billie Jean 1 episode, 2023
- Kacie Rogers
- Â Driver 1 episode, 2023
- Marie Buck
- Â Girlfriend 1 episode, 2023
- Kyle Davis
- Â O'Sullivan 1 episode, 2019
- Laird Macintosh
- Â Chet Chisholm 1 episode, 2019
- Jeff Dunham
- Â Ventriloquist 1 episode, 2020
- Corwin Allard
- Â Tween 1 episode, 2020
- Stephanie Brait
- Â Girlfriend 1 episode, 2020
- Alan Starzinski
- Â Fist Guy 1 episode, 2020
- Greg Lindsay
- Â Captain 1 episode, 2020
- Natisha Anderson
- Â Mrs. Santa 1 episode, 2020
- Whitney Cummings
- Â Courtney 1 episode, 2021
- Gillian Vigman
- Â Felicity 1 episode, 2021
- Tyler Tomás Perez
- Â Miles Longpeter 1 episode, 2021
- Carl W. Crudup
- Â Elderly Man 1 episode, 2021
- Candace Smith
- Â Rosa Roberts 1 episode, 2021
- Nicole Andrews
- Â Gina 1 episode, 2021
- Abigaille Ozrey
- Â Beautiful Twin #1 1 episode, 2021
- Roy Jenkins
- Â Dentist 1 episode, 2021
- Dana DeLorenzo
- Â Gigi Bonano 1 episode, 2023
- David Arquette
- Â Teddy Dickosi 1 episode, 2023
- Gina Hecht
- Â Laura 1 episode, 2023
- Andrea de Oliveira
- Â Maria 1 episode, 2023
- Aris Alvarado
- Â Delivery Guy 1 episode, 2023
- Nina Concepción
- Â Marjorie Fontaine 1 episode, 2023
- Chandra Thomas
- Â Rhonda Shimes 1 episode, 2023
- Jonathon Booker
- Â Camille (Thug #1) 1 episode, 2023
- Jim Woods
- Â Boyfriend 1 episode, 2023
- Kevin Pereira
- Â Toaster Man 1 episode, 2019
- Carrie Clifford
- Â Dispatcher 1 episode, 2019
- Allison Dunbar
- Â Hannah Barbioso 1 episode, 2020
- Ben Seaward
- Â Blast! Driver 1 episode, 2020
- Victor Samuel Lopez
- Â Eyeball Guy 1 episode, 2020
- Darius De La Cruz
- Â Dad 1 episode, 2020
- Bryan Coffee
- Â Washing Machine Guy 1 episode, 2020
- Maria Edible
- Â Penny 1 episode, 2020
- Sofia Ghavami
- Â Dance Instructor 1 episode, 2020
- Randy Liedtke
- Â Norman / ... 1 episode, 2020
- Helena Mattsson
- Â Ulsa 1 episode, 2021
- Kimia Behpoornia
- Â CEO 1 episode, 2021
- Bret Ernst
- Â Captain Palantonio 1 episode, 2021
- Emily Ozrey
- Â Beautiful Twin #2 1 episode, 2021
- Pam Trotter
- Â Nurse 1 episode, 2021
- Tor Brown
- Â Male Bystander 1 episode, 2021
- Tony Danza
- Â Lawrence 1 episode, 2023
- Jade Albany Pietrantonio
- Â Cassie 1 episode, 2023
- Sam Shaw
- Â Dex 1 episode, 2023
- Monica Ruiz
- Â Female Firefighter 1 episode, 2023
- Josh Adwar
- Â Shirtless Firefighter 1 episode, 2023
- Casey Morris
- Â Delivery Man 1 episode, 2023
- Rich Marchewka
- Â Photographer 1 episode, 2023
- Brian Quinn
- Â Soup Man 1 episode, 2019
- Neil Garguilo
- Â Dispatcher Ken 1 episode, 2019
- David Ury
- Â Buffalo Phil 1 episode, 2020
- David Douglas
- Â Man in Black (Director) 1 episode, 2020
- Beth Dover
- Â CeeCee 1 episode, 2021
- Anna Lamadrid
- Â Marketing Exec 1 episode, 2021
- Taylor Krasne
- Â Teenage Girl 1 episode, 2021
- David Shreibman
- Â Eddie Dance Double 1 episode, 2021
- J. Rene Pena
- Â Female Patron 1 episode, 2021
- Madison McGraw
- Â Beautiful Twin #3 1 episode, 2021
- Amin Joseph
- Â Gram Gram 1 episode, 2023
- James William O'Halloran
- Â Male Firefighter 1 episode, 2023
- Alice Rietveld
- Â 'Sue' - Toga Woman 1 episode, 2023
- Tatiana Carr
- Â Firefighter Janna 1 episode, 2023
- Lora Bofill
- Â Nurse 1 episode, 2023
- William J. Heffernan III
- Â Smilin' Dutch Engels 1 episode, 2023
- Will Sasso
- Â Gene Ghoulib 1 episode, 2019
- Trey Carter
- Â Guy 1 episode, 2019
- Jo Farkas
- Â Cat Lady 1 episode, 2019
- April Bowlby
- Â Woman 1 episode, 2020
- Sarati
- Â Sexy Female Firefighter 1 episode, 2020
- Anthea Neri Best
- Â Kailani 1 episode, 2020
- Nelson Cheng
- Â Bloody Stump Guy 1 episode, 2020
- Kassandra Mahea
- Â Olive 1 episode, 2021
- Nathan Dana Aldrich
- Â Male Patron 1 episode, 2021
- Suzanne Gutierrez
- Â Frantic Woman 1 episode, 2021
- Amiyah McGraw
- Â Beautiful Twin #4 1 episode, 2021
- Paloma Esparza Rabinov
- Â Snorkleberry 1 episode, 2023
- Tony Robinette
- Â R 1 episode, 2023
- Bryan Dodds
- Â 'Kevin' - Cupid Man 1 episode, 2023
- Austen Jaye
- Â Firefighter #1 1 episode, 2023
- Eduardo Franco
- Â Gas Mask Stoner 1 episode, 2019
- Christopher Neiman
- Â Block 1 episode, 2019
- Chris Gehrt
- Â Bystander 1 episode, 2019
- Jenn Schatz
- Â Dispatcher 1 episode, 2019
- Colleen Foy
- Â Sign Language Interpreter 1 episode, 2020
- Diane Mizota
- Â Reporter 1 episode, 2020
- Scott Subiono
- Â Owner 1 episode, 2020
- Matthew Downs
- Â Paulson 1 episode, 2020
- Jared Wernick
- Â Sweater Dude 1 episode, 2020
- Brett Davern
- Â Cousin Terry 1 episode, 2023
- Mark Sipka
- Â T 1 episode, 2023
- Alex J. Joseph
- Â Firefighter #2 1 episode, 2023
- JD Pardo
- Â Lopez 1 episode, 2019
- Jimmy Walker Jr.
- Â Elderly Man 1 episode, 2019
- Sheila Shaw
- Â Nurse 1 episode, 2019
- Celeste Pechous
- Â Laura / ... 1 episode, 2019
- Jessica Jones
- Â Dispensary Owner 1 episode, 2019
- Stephen Stanton
- Â Pipey 1 episode, 2020
- Noah Kaye Bentley
- Â Teenager #1 1 episode, 2020
- Lee Jones
- Â Executioner 1 episode, 2020
- Nikea Gamby-Turner
- Â Delivery Room Nurse 1 episode, 2020
- Joey Romaine
- Â Man in Fence 1 episode, 2020
- Callen David
- Â Firefighter #3 1 episode, 2023
- Jed Emerson Culbert
- Â Kid 1 episode, 2023
- Emily Peterson
- Â Danielle Gravatti 1 episode, 2019
- Damion Poitier
- Â Manager 1 episode, 2020
- Theo Lemme
- Â Boy 1 episode, 2023
- Juli Cuccia
- Â Barbi Gravatti 1 episode, 2019
- Hannah Kaler
- Â Girl 1 episode, 2023
- Kalina Vanska
- Â Shopper at Home Goods Store 1 episode, 2019
- Chris Nuñez
- Â Fleshlight Guy 1 episode, 2019
- Katelynn Dubow
- Â Super Bowl Fan (uncredited) 1 episode, 2019
- Lauren Kistner
- Â Brandi (uncredited) 1 episode, 2020
- Katie McCabe
- Â Bikini Babe (uncredited) 1 episode, 2020
- Jennifer Churchich
- Â Photographer (uncredited) 1 episode, 2020
- Jason Jordan
- Â Nick (uncredited) 1 episode, 2020
- Sandy Sunshine
- Â Reporter (uncredited) 1 episode, 2020
- Ryan Lovejoy
- Â Panic Room Hipster (uncredited) 1 episode, 2020
- Sean Patrick Bryan
- Â Firefighter (uncredited) 1 episode, 2021
- Amanda Fields
- Â Showgirl (uncredited) 1 episode, 2021
- Karina Wolfe
- Â Wendy (uncredited) 1 episode, 2021
- Ryan Barnett
- Â Puppeteer (uncredited) 1 episode, 2021
- Hannah Chartier
- Â Hannah (uncredited) 1 episode, 2023