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