cast
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Stephen Stanton
Smitty / Needleman / Sanderson (voice) / Smitty / Needleman (voice) / Sanderson (voice) / Smitty / Needleman / Chuck (voice) / Smitty / Needleman / Sanderson / Reporter 2 (voice) / Sanderson / Chuck (voice) / Smitty / Needleman / Sanderson / Chuck (voice)
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Alanna Ubach
Cutter (voice) / Cutter / Carla (voice) / Cutter / Bean / Carla (voice) / Cutter / Maria / Mother (voice) / Cutter / Carla / Maria (voice) / Cutter / Carla / Mary (voice) / Cutter / Maria / Carla (voice) / Cutter / Rosie / Maria (voice) / Cutter / Carla / Rosie (voice) / Cutter / Rosie (voice) / Cutter / Carla / Narrator (voice) / Cutter / Carla / Rosie (voice
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Lucas Neff
Duncan (voice) / Duncan / Richard (voice) / Duncan / Father (voice)
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Billy Crystal
Mike (voice)
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Ben Feldman
Tylor (voice)
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Mindy Kaling
Val (voice)
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Henry Winkler
Fritz (voice)
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John Goodman
Sulley (voice)
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Christopher Swindle
Phlegm (voice) / Fungus (voice) / Additional Monsters (voice) / Phlegm / Fungus (voice) / Fungus / Don / Charlie (voice) / Phlegm / Fungus / Ted / Little Boy (voice) / Phlegm / Rudy / Additional Monsters (voice) / Phlegm / M.E.R.C. Official 2 / Phlegm / Additional Monsters (voice) / Fungus / Phlegm / McLean / Additional Monsters (voice) / Fungus / Phlegm / Charlie (voice) / Fungus / Ted / Phlegm (voice) / Restaurant Patrons / Sidewalk Monster (voice) / Bathroom Monsters / Four-Eyed Monster / McLean (voice)
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Bob Peterson
Roze (voice) / Roz (voice) / Roze / Bob Peterson (voice) / Roz / Bob Peterson (voice) / Roz / Roze (voice)
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Romi Dames
Additional Monsters (voice) / Hazel (voice) / Lisa (voice) / Lanky (voice) / Lanky / Student Monsters (voice) / Kurtz / Josephina (voice) / Hazel / Addie (voice)
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Dee Bradley Baker
Banana Bread (voice) / Chauncey / Robot Kid / Neighbor Monsters (voice) / Banana Bread / Chompy / Swamp Man / Angry Citizen (voice) / Banana Bread / Chompy / Beefy Scarer (voice) / Chompy (voice) / Additional Monsters (voice)
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Bobs Gannaway
Roto (voice) / Otis / Roto / Bobs (voice) / Otis / Chalooby (voice) / Roto / Otis (voice)
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John Ratzenberger
Bernard (voice) / Adorable (voice) / Bernard / Arodable (voice) / Yeti (voice) / Adorable / Bernard (voice)
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Bonnie Hunt
Ms. Flint (voice)
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Rhys Darby
Roger Rogers (voice)
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Jennifer Tilly
Celia Mae (voice)
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Nathan Fillion
Johnny (voice)
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Michaela Dietz
Additional Monsters (voice) / Snore (voice)
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Carlos Alazraqui
David / Josh Rivera (voice) / Josh Rivera / Jebediah (voice) / Rudy the Service Monster (voice) / John Rivera (voice) / Restaurant Patrons (voice) / Business Monster (voice) / Additional Monsters (voice)
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Aisha Tyler
Millie (voice)
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Bobby Moynihan
Chet (voice)
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Max Mittelman
Reporter 1 / Additional Monsters (voice) / Restaurant Patrons (voice) / Additional Monsters (voice) / Scared Monster / Convention Monsters (voice) / Kenny / Brian (voice) / RΩR Bro / Large Monster / Student Monsters (voice)
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Jenifer Lewis
Grandma Tuskmon (voice)
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Ali Wong
Jill (voice)
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Joe Lo Truglio
Jack (voice)
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Roxana Ortega
Celia Mae (voice) / Celia Mae / Reporter 4 (voice)
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Nohely Quiroz
FearCo. Receptionist (voice) / FearCo. Receptionist / Adult Monster (voice) / Additional Monsters (voice) / Gangly Kid / Additional Monsters (voice) / MNN Receptionist / MU Student (voice)
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Curtis Armstrong
Mr. Crummyham (voice)
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Alan Kim
Ben (voice)
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Paula Pell
Sunny (voice)
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Corey Burton
Slappy (voice) / C.R.E.E.P. WOrker / Sloppy (voice)
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Richard Ayoade
Declan (voice)
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Janelle James
Joy (voice)
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Aubrey Plaza
Claire (voice)
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Julia Butters
Lorelei (voice)
- Sander Argabrite J.J. (voice)
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Kimberly Brooks
Additional Monsters (voice)
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Kurtwood Smith
Alistair Clawbottom (voice)
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Jimmy Tatro
Skyler (voice)
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Alan Tudyk
Maître d' (voice) / Pierre / Michel / Maître d' (voice) / M.E.R.C. Official 1 / Alarmed Monster (voice)
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Alfred Molina
Professor Knight (voice)
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Dave Wittenberg
Additional Monsters (voice) / Fan Monster (voice)
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Gabriel Iglesias
Gary (voice)
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Natalie Lashkari
Little Girl Monster (voice) / Monster Kids (voice)
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Emily Peterson
Fear Co. Narrator / Fancy Monsters (voice) / Restaurant Patrons (voice)
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Jennifer Coolidge
Marilyn (voice)
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Kevin Deters
DJ Slinky Stinkwell (voice) / Janitor (voice)
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Ethan Sandler
Stubby Lizzardo (voice)
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Stevie Wermers-Skelton
Swamp Woman (voice) / Scream Con Mascot / Bully Monster 2 (voice)
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Bowen Yang
Carter (voice)
- Aubrey Matalon Scarlett (voice) / Neighbor Monsters (voice)
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Steve Buscemi
Randall (voice)
- Ferrell Barron Additional Monsters (voice)
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Bob Uecker
Bob Yucker (voice)
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John Michael Higgins
Argus Blinks (voice)
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Hadley Gannaway
Thalia (voice)
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Devin Bright
Marcus (voice)
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Cooper J. Friedman
Alexander (voice)
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Lucian Perez
Oscar (voice)
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Isabella Abiera
Gurty (voice)
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Danny Pudi
Evan (voice)
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Danny Trejo
Terry (voice)
- Cody Rigsby Spin-Energy Instructor Monster (voice)
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Ryan McPartlin
Bully Monster 1 / Mr. April (voice)
- Rania Sharkawy Avani (voice)
- Dan Molina Ethan (voice)
- Evan Ridpath Tiny Monster (voice)
- Tessa Rozanski Hilary / Sweet Kid (voice)
- Sam Deters Not Valet Monster (voice)
