Summer Camp Island

Julia Pott

Susie (voice)

Oona Laurence

Hedgehog (voice)

Antonio Raul Garcia

Oscar (voice)

Elliott Smith

Oscar (voice)

Ramone Hamilton

Max (voice)

Lo Mutuc

Alice (voice)

Indie Nameth

Lucy (voice)

Asher Bishop

Oscar (voice)

Bobby Moynihan

Additional Voices (voice) / Dennis (voice) / Jimjams (voice) / Jimjams / Additional Voices (voice) / Melvin (voice) / Mortimer (voice) / Mortimer / Melvin (voice) / Mortimer / Melvin / Jimjams (voice) / Old Log Ghost (voice) / Peach Stand Guy / Additional Voices (voice) / Toad Doctor (voice) / Toad Doctor / Jimjams (voice) / Tub (voice)

Sam Lavagnino

Additional Voices (voice) / Alien King (voice) / King (voice) / Pepper (voice) / Pepper / Alien (voice) / Pepper / King (voice)

Ethan Maher

Additional Voices (voice) / Boyband (voice) / Dream Boy (Susie) (voice) / Puddle (voice)

Fortune Feimster

Additional Voices (voice) / Ava (voice) / Ava / Additional Voices (voice) / Dolly (voice) / Mrs. Goose (voice) / Vern / Dolly (voice)

Naomi Hansen

Additional Voices (voice) / Pajamas (voice)

Nikki Castillo

Betsy (voice) / Betsy / Sarah (voice)

Andre Robinson

Additional Voices (voice) / Decent Boi (Hedgehog) (voice) / Oliver (voice)

Alexa Nisenson

Alexa (voice)

Lesley Nicol

Ramona (voice) / Ramona / Additional Voices (voice) / Ramona / Emma (voice) / Ramona / Mo (voice)

Mike Birbiglia

Howard (voice)

Cole Sanchez

Additional Voices (voice) / Alligator 1 (voice) / Alligator Chef (voice) / Freddie (voice) / Frog King (voice) / Ghost Dad #2 (voice) / Ghost Dad Cole (voice) / Salt Parasite (voice) / Vann (voice) / Yeti Orderly (voice)

Alia Shawkat

Blanche (voice) / Blanche / Werefloer (voice) / Butter Goth (voice) / Cinnamon Raisin Toast (voice)

Whoopi Goldberg

Barb (voice)

Kimiko Glenn

Additional Voices (voice) / Margot (voice) / Margot / Additional Voices (voice) / Margot / Ski Bat (voice)

Kent Osborne

Additional Voices (voice) / Alligator Chef (voice) / Chet (voice) / Ghost Dad #1 (voice) / Ghost Dad Kent (voice) / Grigory Midnight / Additional Voices (voice)

Faye Larkin

Lil' M (voice) / Mildred (voice)

Alfred Molina

Additional Voices (voice) / Andy (voice) / Monster Under the Bed (voice) / Monster Under the Bed / Oscar's Dad (voice)

Kathleen Wilhoite

Oscar's Mom (voice) / Sue (voice)

Julian Edwards

Additional Voices (voice) / Pepper (voice) / Pepper / Additional Voices (voice)

Cedric the Entertainer

Additional Voices (voice) / Moon (voice)

Kevin Michael Richardson

Additional Voices (voice) / Auctioneer (voice) / Langston / Waylon (voice) / Professor (voice) / Time (voice) / Toast Ghost (voice) / Waylon (voice) / Yeti Elder (voice)

Jo Firestone

Mallory (voice)

Roz Ryan

Additional Voices (voice) / Elder (voice) / Grandma Tumpet (voice) / Patrice (voice) / Tammy (voice) / Tammy / Patrice (voice) / The Death Cap (voice)

Aparna Nancherla

Additional Voices (voice) / Oddjobs (voice) / Opie (voice) / Opie / Additional Voices (voice) / Opie / Agatha (voice)

Stephen Root

Additional Voices (voice) / Dean Stuart / Additional Voices (voice) / Prime Monister (voice) / Stuart (voice)

Richard Kind

Additional Voices (voice) / Hedgehog's Dad (voice) / Shark (voice)

Rylee Alazraqui

Additional Voices (voice) / Alien (voice)

Niki Yang

Additional Voices (voice) / Batilda (voice) / Egg (voice) / Heather D (voice) / Heather D / Rosie (voice) / Shortcake (voice)

Maria Bamford

Foghorn (voice) / Polly (voice) / Puffer Fish (voice) / Sandy (voice) / The Royal Mush (voice) / Toothpaste (voice)

Elijah Wood

Saxophone (voice)

Max Mitchell

Additional Voices (voice) / Jeremiah (voice) / Patootie (voice) / Prophecy Alien (voice)

Mykal-Michelle Harris

Lem (voice) / Lem / Additional Voices (voice)

Luke Lowe

Additional Voices (voice) / Basketball (voice)

Laraine Newman

Additional Voices (voice) / Hedgehog's Mom (voice) / Hedgehog's Mom / Additional Voices (voice)

Keith Ferguson

Additional Voices (voice) / FM Dog (voice) / Ghost Pendarvis (voice)

Jeremy Crutchley

Additional Voices (voice) / Frog Musician (voice) / Theo (voice)

Melanie Lynskey

Sun (voice)

Daphne Thomas

Lem (voice)

Paula Poundstone

Paulette (voice)

Gaille Heidemann

Additional Voices (voice) / Helen (voice)

Doug Benson

Bassoon (voice) / Bassoon / Additional Voices (voice)

Stefan Johnson

Additional Voices (voice) / Moon (voice)

Xavier Patterson

Ghost the Boy (voice)

Scarlett Rose

Additional Voices (voice)

Vanessa Lee Chester

Nancy (voice) / Nancy / Minituni (voice)

Julian Barratt

Poppawoppa (voice) / Sandwich Monk (voice)

Shirley Henderson

Additional Voices (voice) / Mum (voice)

Toks Olagundoye

Additional Voices (voice)

Betsy Sodaro

Skadi (voice)

Sally Struthers

Additional Voices (voice) / Rose (voice)

Wallace Shawn

Barry (voice) / Morris Mole (voice) / Pete (voice)

Remy Edgerly

Mystical Alien (voice) / Noodle (voice) / Noodle / Additional Voices (voice)

Jason Maybaum

Fife (voice)

Frances Conroy

Lead Patrol Elf (voice) / Ms. Clearinet (voice)

Sunita Mani

Additional Voices (voice) / Lucyola (voice)

Kate Berlant

Striped Horse (voice)

John Early

Bearded Sheep (voice)

Ashley Jensen

Miss Mary (voice)

Alex Lawther

Mildred's Friend (voice) / Mildred's Friend / Additional Voices (voice)

Dylan Alvarado

Frog Prince (voice) / King (voice)

Issac Ryan Brown

Max (voice)

Maggie Lowe

Additional Voices (voice)

Daniel Hagen

Additional Voices (voice)

Eric Bauza

Additional Voices (voice)

Dexter Hobert

Additional Voices (voice)

Caleb McLaughlin

Ghost (voice)

Fred Melamed

Monk Receptionist (voice) / Monk Receptionist / Additional Voices (voice)

Mattea Quin

Lem (voice)

Kate Flannery

Georgina (voice)

Don Lake

Additional Voices (voice) / Doc Hogsbottom (voice)

Isobel Chinnery

Ramona Age 8 (voice)

Shen Yao

Additional Voices (voice)

Audrey Wasilewski

Red Haired Moom (voice) / Yeti Nurse (voice)

Kate Micucci

Accordion (voice) / Additional Voices (voice)

Keith David

Lithophone (voice) / Tummy (voice)

Lauren Lapkus

Olf (voice)

Mia Lynn Bangunan

Baklava (voice) / Kid Mouse 1 (voice)

Lauren Mei

Additional Voices (voice) / Kid Mouse 2 (voice)

Quinn Minichino Eakins

Moonbeam (voice)

Sarah Lloyd

Sarah (voice)

Georgie Glenn

Adult Mildred (voice)

Joanna Lumley

Adult Susie (voice)

Ian Chen

Pale Dog (voice)

Keith Szarabajka

Additional Voices (voice)

Brycen Taylor Hall

Additional Voices (voice)

O'Neill Monahan

Additional Voices (voice)

Cooper Yarovinsky

Additional Voices (voice)

Nat Faxon

Popular Banana Split (voice)

Tyler Williams

Additional Voices (voice)

Brenda Vaccaro

Godmonster (voice)

Lorraine Bracco

Werewolf Queen (voice)

Juju Journey Brener

Additional Voices (voice)

Brian Baumgartner

Storm Cloud (voice)

Bobcat Goldthwait

Monk Voice (voice)

Lori Petty

Ms. Pinch (voice)

Garrett Davis

Toothpaste (voice)

Jane Lynch

Skadi's Mom (voice)

Rachel Dratch

Bernadette (voice)

Carol Kane

Barb Jr. (voice)

Wanda Sykes

Ethel (voice)

John Hodgman

Bartholomole (voice)

Kathleen Turner

Mole Judge (voice)

Justin Felbinger

Dungeon Doug (voice)

Jack Stanton

Additional Voices (voice)

Cooper J. Friedman

Caboodle (voice)

Steve Berg

Harry (voice)

Melissa Villaseñor

Psychic (voice)

Bella Ramsey

Ramona Age 15 (voice)

Lucian Perez

Glazed Ham (voice)

Austen Alazraqui

Additional Voices (voice)

Hudson Cordero

Additional Voices (voice)

Henry Holcomb

Additional Voices (voice)

Ashly Burch

Additional Voices (voice)

Loretta Devine

Sea Cow (voice)

Cole Escola

Sea Slug (voice)

Elsie Fisher

Sea Snail (voice)

Scott Hoying

Blobfish (voice)

Eva Victor

Sea Susie (voice)

Archie Engelhardt

Additional Voices (voice)

Julian Glander

Additional Voices (voice)

Olivia Kidder

Additional Voices (voice)

Gina Randle

Additional Voices (voice)

Travis McElroy

Cutie (voice)

Fred Stoller

Ghost the Earnest (voice)

Lorraine Toussaint

Emily Ghost (voice)

Lolly Adefope

Snowflake (voice)

Danny Pudi

Cookiesmell (voice)

Lola Valentina Keaton

Additional Voices (voice)

Bob Balaban

Gerald (voice)

Richard Masur

The Broom Maker (voice)

Dee Bradley Baker

Stair Rabbit (voice)

Aimee Mann

Siren (voice)

Thomas Herpich

Carl (voice)

Poppy DeAbaitua

Young Susie (voice)

Alice Pott

New Susie (voice)

Chris Fleming

Professor Q (voice)

Kate Dickie

Professor Elliot (voice)

Iris Bahr

Mother Mouse (voice)

Tony Curran

Ryan (voice)

Mathieu Szymkowiak

Papa Mouse (voice)

LaTanya Richardson Jackson

Queen Bee (voice)

Yara Shahidi

Beanie (voice)

Momona Tamada

Bethie (voice)

Sacha Dhawan

Miracle Rabbit (voice)

Isla Ashworth

Young Mildred (voice)

Joshua Das

Additional Voices (voice)

Laura Dickinson

Additional Voices (voice)

Daniel Dunlap

Additional Voices (voice)

Seo Kim

Additional Voices (voice)