Diane Delano (62)

Tuba (voice)

Isabella Abiera (9)

Hazel (voice)

Johnny Young

Min-Gi (voice)

Sekai Murashige

Ryan (voice)

Dee Bradley Baker (56)

Monster Atticus (voice) / Ghoms (voice)

Kirby Howell-Baptiste (32)

Grace (voice) / Voice 3 / Mail Lady (voice)

Kyle McCarley (33)

Simon (voice) / Voice 4 / Playbill / Spotlight / Tragedy Mask (voice)

Jeremy Crutchley

Glad-One (voice) / The Dean (voice) / Mask Monster (voice)

Ashley Johnson (35)

Tulip Olsen (voice) / Mirror Tulip "MT" (voice) / The Steward (voice) / Popcorn (voice) / Lake (voice) / Mom / Girl (voice) / Mirror Tulip (voice)

Robbie Daymond (37)

Jesse (voice) / Richard Trundleshank (voice) / Fyodor / Apex Raider 2 (voice) / Bully 2 (voice)

Owen Dennis (32)

Sad-One (voice) / TV Jingle (voice) / Frank (voice) / Pencil People (voice) / Toad / Spells Wizard / Bear (voice) / Toad / Bully 3 (voice) / Cross-Eyed Duck / Talking Skeleton (voice) / Greige / Giant (voice)

Rhys Darby (45)

Randall / Balloon Randall (voice)

Justin Felbinger (17)

Nate (voice)

Grey DeLisle (45)

Lunch Lady / Tape Merchant / Seedy Merchant (voice)

Laraine Newman (67)

Marietta Gillicutty / Maise Trundleshank (voice)

Kari Wahlgren (42)

Sinesta Gillicutty / Bree Trundleshank / Girl Quadruplets (voice)

Rick Zieff (57)

Ithmush Trundleshank / Nathaniel Trundleshank / Silas Trundleshank (voice)

Wayne Knight (63)

Marcel (voice)

Scott Menville (48)

Troy / Bully 1 (voice)

Reagan Gomez-Preston (39)

Mikayla / Dolphin Handler / Ugly Irwin (voice) / Mikayla (voice)

Bill Corbett (59)

Perry the Parasite (voice)

BeBe Zahara Benet (38)

Sashay (voice)

Ben Mendelsohn (50)

Agent Mace (voice)

Bradley Whitford (59)

Agent Sieve (voice)

Lindsay Katai

Nancy (voice) / Little Badger Boy / Badger Mother (voice)

Keith Ferguson (47)

Goblin / Tusk Creature / Announcer Tannuki (voice) / Wilbur Gillicutty / Seth Trundleshank / Boy Quadruplets (voice) / Comedy Mask (voice)

Naomi Hansen

5 Year Old Tulip (voice)

Lily Sanfelippo

6 Year Old Tulip / 8 Year Old Tulip (voice)

Kate Mulgrew (64)

The Cat (voice)

Matthew Rhys (44)

Alrick (voice) / Aloysius (voice)