Star Butterfly

Eden Sher

Star Butterfly (voice)

Adam McArthur

Marco Diaz (voice)

Alan Tudyk

Ludo / King River Butterfly (voice)

Grey DeLisle

Queen Butterfly (voice)

Fred Tatasciore

Talon Raventalon (voice)

Esmé Bianco

Eclipsa (voice)

Abby Elliott

Janna Ordonia (voice)

Rider Strong

Tom Lucitor (voice)

Jeff Bennett

Principal Skeeves (voice)

Jenny Slate

Pony Head (voice)

Artt Butler

Rafael Diaz / Vendor (voice)

Zosia Mamet

Hekapoo (voice)

Dee Bradley Baker

Mewnian Rats (voice)

Mark Gagliardi

Police Officer / Prince / Waiter (voice)

Jeffrey Tambor

Glossaryck (voice)

Daron Nefcy

Squirrel Monster / Additional Voices (voice)

Kevin Michael Richardson

Rhombulus / Platypus Monster / Additional Voices (voice)

Dana Davis

Kelly / Kelly's Mom / Additional Voices (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

Lydia (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

Dogbull (voice)

Joshua Rush

Jeremy Birnbaum (voice)

Dave Allen

Mr. Candle (voice)

Greg Cipes

Aaron Dominic (voice)

Tress MacNeille

Exasperella / Additional Voices (voice)

Kate Higgins

White Baby Unicorn (voice)