On screen
Cast
117 credited performers
Eden Sher
Star Butterfly (voice)
Adam McArthur
Marco Diaz (voice)
Alan Tudyk
Ludo / King River Butterfly (voice)
Grey DeLisle
Queen Butterfly (voice)
Fred Tatasciore
Buff Frog / Additional Voices (voice)
Esmé Bianco
Eclipsa (voice)
Abby Elliott
Janna Ordonia (voice)
Rider Strong
Tom Lucitor (voice)
Jeff Bennett
Bearicorn (voice)
Jenny Slate
Pony Head (voice)
Artt Butler
Mr. Diaz (voice)
Zosia Mamet
Hekapoo (voice)
Dee Bradley Baker
Lekmet (voice)
Mark Gagliardi
Lord Lucitor (voice)
Jeffrey Tambor
Glossaryck (voice)
Daron Nefcy
Sabrina (voice)
Kevin Michael Richardson
Rhombulus (voice)
Dana Davis
Kelly / Lady Whosits (voice)
Michael C. Hall
Toffee (voice)
Jon Heder
Oskar Greason (voice)
Nia Vardalos
Angie Diaz (voice)
Eric Bauza
Spider with a Top Hat / Additional Voices (voice)
Keith David
Glossaryck (voice)
Nate Torrence
Ferguson (voice)
Jessica Walter
Meteora Heinous (voice)
Amy Sedaris
Mina Loveberry (voice)
DeeDee Rescher
Miss Skullnick (voice)
Kimaya Thais
Additional Voices
Carl Weathers
Omnitraxus Prime (voice)
Matt Chapman
Alfonzo (voice)
Nick Swardson
Sensei (voice)
Natalie Palamides
Foolduke (voice)
Patrick Stump
Ruberiot (voice)
Eddie Perino
Seahorse (voice)
John DiMaggio
Additional Voices (voice)
Joshua Rush
Jeremy Birnbaum (voice)
Dave Allen
Sir Crandle (voice)
Greg Cipes
Aaron Dominic (voice)
Tress MacNeille
St. Olga / Young Meteora / Additional Voices (voice)
Kate Higgins
Firstborn (voice)
Gary Anthony Williams
Rich Pigeon (voice)
Damon Jones
Sir Lavabo (voice)
Jaime Camil
Globgor (voice)
Jim Gaffigan
Father Time (voice)
Maurice LaMarche
King Pony Head (voice)
Minae Noji
Brittney Wong (voice)
Chris Tergliafera
Rasticore (voice)
Atticus Shaffer
Dennis (voice)
Arif S. Kinchen
Princess Smooshy (voice)
Leigh-Allyn Baker
Mail Monster (voice)
Greg Ellis
Manfred (voice)
Juliana Hansen
Princess Spiderbite (voice)
Josh Sussman
Rock Johansen / Mole Monster / Additional Voices (voice)
Justin Roiland
Doop-Doop (voice)
Brian Posehn
Lobster Claws (voice)
Stephen Root
Brian (voice)
Sean Schemmel
Box of Truth (voice)
Natasha Rothwell
Brunzetta (voice)
Lauren Lapkus
Higgs (voice)
Bobby Miller
Slime (voice)
Nicole Byer
Princess Arms (voice)
Kari Wahlgren
Baby Meteora (voice)
Steve Little
Spider with a Top Hat (voice)
Alex Hirsch
Ben Fotino (voice)
Jessica Paré
Chloe (voice)
Isabella Gómez
Teenage Mariposa (voice)
Bryana Salaz
Teenage Meteora (voice)
Max Mittelman
Wyscan (voice)
Desus Nice
Pickles (voice)
The Kid Mero
Needles (voice)
Gemma Whelan
Solaria Butterfly (voice)
Corey Burton
Monster Arm (voice)
Rob Paulsen
Gustav (voice)
April Winchell
Riddle Sphinx (voice)
Danny Woodburn
Pixie Taskmaster (voice)
Anna Camp
Pixie Empress (voice)
Gwendoline Yeo
Mrs. Liao (voice)
Jamie Kennedy
Helios (voice)
Jodi Benson
Singing Teacher (voice)
Lyons Mathias
Laser Puppy (voice)
John Mathot
VHS Guy (voice)
Mayim Bialik
Willoughby (voice)
Yvette Nicole Brown
Brigid (voice)
'Weird Al' Yankovic
Preston (voice)
Sonny Ashbourne Serkis
Young River Johansen (voice)
Jess Harnell
Old Songstrel (singing voice)
Jerry Trainor
Roy (voice)
Tom Kenny
Additional Voices (voice)
Danielle Fishel
Librarian (voice)
Phil LaMarr
Kelly's Dad / Additional Voices (voice)
Jenna Lea Rosen
Mewni Youth Choir (singing voice)
Scott Menville
Zeke / Corn Cob Vendor (voice)
Ralph Ineson
Demoncist (voice)
Carol Kane
Dr. Jelly Goodwell (voice)
David Krumholtz
Cobalt Ferrero (voice)
James Kyson
Bam Ui Pati Actor (voice)
Agnes Shin
Bam Ui Pati Main Actress / Additional Voices (voice)
Laura Silverman
Krysthalle Pony Head / Additional Voices (voice)
Bresha Webb
Hornanne Pony Head / Additional Voices (voice)
Rhys Darby
Eddie (voice)
Nika Futterman
Additional Voices (voice)
Roger Craig Smith
Additional Voices (voice)
Tony Hale
Pie King / Additional Voices (voice)
Julian Edwards
Additional Voices (voice)
Tajna Tanovic
Ingrid (voice)
Bennett Abara
Princess Quasar (voice)
Ross Bryant
Reynaldo (voice)
Ron Lynch
Richard / Flying Pig (voice)
Chris Redd
Hypnoslumber (voice)
Maria Bamford
Make-Up Blast (voice)
Hynden Walch
Babs (voice)
Will Forte
Tyler / Hunter / Chet / Blue Helmet Kid (voice)
Bill Hader
Additional Voices (voice)
Madeleine McGraw
Young Moon Butterfly (voice)
Susan Bennett
Card (voice)
Katie Driver
Young Moon Butterfly (voice)
Billy West
Hungry Larry (voice)