Natalie Portman Mary Muggle-Wump (voice)
Emilia Clarke Pippa (voice)
Margo Martindale Credenza Twit (voice)
Jason Mantzoukas Mayor Wayne John John-John (voice)
Alan Tudyk The Sweet-Toed Toad (voice)
Rebecca Wisocky Dee Dumdie-Dungle (voice)
Dee Bradley Baker Muggle-Wump Efforts / Florbnorbles (voice)
Roald Dahl Novel
Maitreyi Ramakrishnan Beesha Balti (voice)
Nicole Byer Beverly Onion (voice)
Timothy Simons Marty Muggle-Wump (voice)
Mark Proksch Horvis Dungle (voice)
Johnny Vegas Jim Twit (voice)
Rif Hutton Cop #1 (voice)
David Byrne Songs, Gordon Sniffles (voice)
Della Saba Dorcas Dumdie-Dungle (voice)
Phil Johnston Director, Producer, Mr. Napkin (voice), Writer
Sami Amber Jeremy (voice)
Zarah Kulczycki Harold Hulse (voice)
Scott Whyte Voice Changer 30,000 / Rabney "Lyle" Kalemann (voice)
Julie Lockhart Executive Producer
David Cowgill Golf Announcer (voice)
Shane Sweet Triperot Man (voice)
Hayley Williams Songs, Marleeta Punge (voice)
John H. Williams Executive Producer
Elisabeth Murdoch Executive Producer
Rémi Salmon Production Design
Stephanie Escajeda Constance Klurb (voice)
Mary Coleman Executive Producer
Erika Dapkewicz Editor, Florbnorble Leader (voice)
William Calvert Jailer (voice)
Craig Rittenbaum Line Producer
Oli Julian Original Music Composer
Cymbre Walk Casting
Todd Demong Co-Director
Lara Breay Executive Producer
Kirk Garfield VFX Supervisor
Sarah Smith Executive Producer
Valentin Beaumont Visual Effects Technical Director
Meg Favreau Writer
Ryan Anderson Lopez Busby Mulch (voice)
Charlie Berens Gorb Klurb (voice)
Bianca K. Dansoh Production Manager
Katie Shanahan Co-Director
Maggie Malone Producer
Jack Kasprzak Animation Director
Natalie Fischer Executive Producer
Daisy May West Producer
Israa Zainab Mandy Muggle-Wump (voice)
Matthew Bilton Head of Layout
Riley King Tuna Remnant (voice)
Fernando Peque Art Direction