Anna Kendrick as Queen Poppy
Justin Timberlake as Branch
Rachel Bloom as Queen Barb
James Corden as Biggie
Ron Funches as Cooper and Bloofy
Kelly Clarkson as Delta Dawn
Anderson .Paak as Darnell
Sam Rockwell as Hickory
George Clinton as King Quincy
Mary J. Blige as Queen Essence
Kenan Thompson as Tiny Diamond
Kunal Nayyar as Guy Diamond
Icona Pop as Satin and Chenille
J Balvin as Tresillo
Flula Borg as Dickory
Ester Dean as Legsly
Jamie Dornan as Chaz
Gustavo Dudamel as Trollzart
Ozzy Osbourne as Thrash
Anthony Ramos as King Trollex
Karan Soni as Riff
Red Velvet as the K-Pop Gang
Kevin Michael Richardson as Mr. Dinkles
Walt Dohrn as Smidge, Cloud Guy, King Peppy and Fuzzbert
Betsy Sodaro as Clampers
Marcella Lentz-Pope as Carol
Berenice Amador and Jamila Hache as Marimba and Tambora
Justin McElroy, Travis McElroy, and Griffin McElroy as Skyscraper Troll
Justin McElroy as Techno Beat-Drop button aka TBDB
Christopher Mintz-Plasse as Gristle Jr.
Zooey Deschanel as Bridget
Amy Poehler as Joy
Maya Hawke as Anxiety
Kensington Tallman as Riley Andersen
Liza Lapira as Disgust
Tony Hale as Fear
Lewis Black as Anger
Phyllis Smith as Sadness
Ayo Edebiri as Envy
Adèle Exarchopoulos as Ennui
Paul Walter Hauser as Embarrassment
Lilimar as Valentina "Val" Ortiz
Grace Lu as Grace
Sumayyah Nuriddin-Green as Bree
Diane Lane as Mrs. Andersen
Kyle MacLachlan as Mr. Andersen
Yvette Nicole Brown as Coach Roberts
James Austin Johnson as Pouchy
Yong Yea as Lance Slashblade
June Squibb as Nostalgia