- Melissa Povenmire
- Â Gretel 50 episodes, 2022-2025
- Michael Cimino
- Â Kevin / ... 50 episodes, 2022-2025
- Beck Bennett
- Â Hamster / ... 50 episodes, 2022-2025
- Joey King
- Â Fred / ... 37 episodes, 2022-2024
- Carolina Ravassa
- Â Carolina / ... 34 episodes, 2022-2024
- Brock Powell
- Â Additional Voices / ... 29 episodes, 2022-2024
- Priah Ferguson
- Â Bailey / ... 27 episodes, 2022-2024
- Liza Koshy
- Â Veronica Hill / ... 27 episodes, 2022-2024
- Elske Stout
- Â Grietje 27 episodes, 2022-2023
- Hiromi Dames
- Â Hiromi / ... 26 episodes, 2022-2024
- Isaac Robinson-Smith
- Â Additional Voices / ... 26 episodes, 2022-2024
- Matt Jones
- Â Dave 25 episodes, 2022-2024
- Dan Povenmire
- Â Additional Voices / ... 21 episodes, 2022-2024
- Debra Wilson
- Â Additional Voices / ... 17 episodes, 2022-2024
- Keith Ferguson
- Â Additional Voices / ... 15 episodes, 2022-2024
- Lauren Tom
- Â Additional Voices / ... 14 episodes, 2022-2024
- Dee Bradley Baker
- Â Additional Voices / ... 14 episodes, 2022-2024
- Joanna Hausmann
- Â Additional Voices / ... 13 episodes, 2022-2024
- Phil LaMarr
- Â Professor Exclamation / ... 12 episodes, 2022-2024
- Eric Bauza
- Â Additional Voices / ... 11 episodes, 2022-2024
- Alyson Stoner
- Â Lauren / ... 10 episodes, 2022-2024
- Carlos Alazraqui
- Â Additional Voices / ... 9 episodes, 2022-2024
- Tiana Camacho
- Â Additional Voices / ... 9 episodes, 2022-2024
- Pamela Adlon
- Â Nordle / ... 8 episodes, 2022-2024
- Michael-Leon Wooley
- Â Additional Voices / ... 8 episodes, 2022-2023
- Akintoye
- Â Anthony 7 episodes, 2023-2024
- Cree Summer
- Â Additional Voices / ... 7 episodes, 2022-2024
- Brett Dalton
- Â Mayor Meyer / ... 6 episodes, 2023-2024
- James Adomian
- Â Additional Voices / ... 6 episodes, 2022-2024
- Robbie Wyckoff
- Â Additional Voices 6 episodes, 2023-2024
- Alex Estrada
- Â Tobor / ... 6 episodes, 2023-2024
- Abby Espiritu
- Â Additional Voices / ... 5 episodes, 2022-2024
- Bob Bowen
- Â Additional Voices / ... 5 episodes, 2023-2024
- Grey Griffin
- Â Additional Voices / ... 5 episodes, 2024
- Valerie Breiman
- Â Additional Voices 5 episodes, 2022-2024
- Diedrich Bader
- Â Additional Voices / ... 4 episodes, 2023
- Hunter King
- Â Additional Voices 4 episodes, 2022-2023
- Richie Moriarty
- Â Additional Voices / ... 4 episodes, 2022-2024
- Jeff 'Swampy' Marsh
- Â Additional Voices / ... 4 episodes, 2022-2023
- Jenny Lorenzo
- Â Abuelita / ... 3 episodes, 2022-2024
- Kevin Michael Richardson
- Â Additional Voices / ... 3 episodes, 2023-2024
- Casey Hamilton
- Â Additional Voices / ... 3 episodes, 2022-2023
- Camryn Grimes
- Â Tina / ... 3 episodes, 2022-2023
- Stephen Root
- Â Horsegobble / ... 3 episodes, 2023
- Karina Moreno
- Â La Cebolla 3 episodes, 2022-2024
- John DiMaggio
- Â Additional Voices / ... 3 episodes, 2022-2024
- Raffael Ponce-Valencia
- Â Additional Voices / ... 3 episodes, 2022-2023
- Richard Kind
- Â Tchotchke 2 episodes, 2023-2024
- John Milhiser
- Â Additional Voices / ... 2 episodes, 2023-2024
- Stephen Kramer Glickman
- Â Mud Singer / ... 2 episodes, 2024
- John Hodgman
- Â Micromanager 2 episodes, 2023-2024
- Brook Chalmers
- Â Additional Voices / ... 2 episodes, 2022
- Seth Green
- Â Additional Voices / ... 2 episodes, 2024
- Adam Rose
- Â The Earworm 2 episodes, 2022-2023
- Kimberly Brooks
- Â Additional Voices / ... 2 episodes, 2023-2024
- Lexie Shoaibi
- Â Additional Voices / ... 2 episodes, 2023
- Khary Payton
- Â Additional Voices / ... 2 episodes, 2022
- Tom Bromhead
- Â Additional Voices / ... 2 episodes, 2023-2024
- Roger Craig Smith
- Â Additional Voices 2 episodes, 2024
- Sophia James
- Â Additional Voices 2 episodes, 2024
- Danielle Perez
- Â Additional Voices 2 episodes, 2023
- Emma Ramos
- Â Irasema 2 episodes, 2024
- 'Weird Al' Yankovic
- Â Wacko Wally 1 episode, 2022
- Danielle Threet
- Â Inga the Ice Queen 1 episode, 2023
- Alfred Molina
- Â Meteoroid 1 episode, 2024
- Dylan Adler
- Â Fredrick 1 episode, 2024
- Sarah Sherman
- Â Crimson Haste 1 episode, 2023
- Lucas Neff
- Â Additional Voices / ... 1 episode, 2023
- Ming-Na Wen
- Â Dr. Hawthorne 1 episode, 2024
- Brett Gelman
- Â Felix 1 episode, 2024
- Andrew Santiago
- Â Jeffrey Demo 1 episode, 2024
- Kate Micucci
- Â Kelly 1 episode, 2023
- Rachel Dratch
- Â Helen 1 episode, 2023
- Tessa Skara
- Â Itsy Bitsy 1 episode, 2023
- Casey Wilson
- Â Ms. Knight 1 episode, 2024
- Bobby Moynihan
- Â Slamonade Stan 1 episode, 2024
- Maurice LaMarche
- Â Mr. Large 1 episode, 2024
- The Kid Mero
- Â Luis Demo 1 episode, 2024
- Betsy Sodaro
- Â Coach Haggerty 1 episode, 2022
- Corey Burton
- Â Additional Voices / ... 1 episode, 2022
- Thomas Sanders
- Â Additional Voices / ... 1 episode, 2022
- Jane Lynch
- Â Bayou Barb 1 episode, 2023
- Flula Borg
- Â Additional Voices / ... 1 episode, 2023
- Mike 'The Miz' Mizanin
- Â Additional Voices / ... 1 episode, 2023
- Karalynn Dunton
- Â Belle 1 episode, 2023
- Lance Krall
- Â Hank Franklin 1 episode, 2024
- Baraka May
- Â Additional Voices / ... 1 episode, 2022
- Joe Lewis
- Â Telenovela Raoul 1 episode, 2022
- Alex Cazares
- Â Colleen 1 episode, 2024
- Austin Watson
- Â Additional Voices / ... 1 episode, 2023
- Ana Gasteyer
- Â Lorraine 1 episode, 2024
- Chris Estrada
- Â Jaime 1 episode, 2024
- John Sartori
- Â Sam Slickman 1 episode, 2024
- Sebastian Conelli
- Â Carl 1 episode, 2024
- Carmen Carter
- Â Additional Voices 1 episode, 2024
- Erik Kling
- Â Additional Voices 1 episode, 2024
- Jake Green
- Â Additional Voices 1 episode, 2024
- Alex Saad
- Â Additional Voices 1 episode, 2024
- Fred Tatasciore
- Â Additional Voices 1 episode, 2024
- James Sie
- Â Additional Voices 1 episode, 2024
- Fabio Tassone
- Â Additional Voices 1 episode, 2022
- Kyle Mooney
- Â Additional Voices / ... 1 episode, 2023
- Michaela Dietz
- Â Additional Voices 1 episode, 2024
- André Sogliuzzo
- Â Additional Voices 1 episode, 2024
- Olivia Olson
- Â Additional Voices 1 episode, 2023
- Kari Wahlgren
- Â Additional Voices 1 episode, 2024
- Zeno Robinson
- Â Additional Voices 1 episode, 2024
- Danny Jacob
- Â Additional Voices 1 episode, 2024
- Táta Vega
- Â Additional Voices 1 episode, 2024
- Kyle Menke
- Â Additional Voices 1 episode, 2023
- Vincent Martella
- Â Additional Voices 1 episode, 2024
- Chris Diamantopoulos
- Â Crooner 1 episode, 2023
- Noa Claassen
- Â Billy (NL) 1 episode, 2023
- Carl Faruolo
- Â Lysette Armer (uncredited) 1 episode, 2023