- Anna Kendrick as Poppy, the sweet and optimistic queen of the pop trolls.
- Justin Timberlake as Branch an over-cautious and good-hearted troll survivalist and Poppy’s best friend.
- Ester Dean as Legsly, a pop trollIcona Pop as Satin and Chenille fashion troll twins who are conjoined at their hair.
- Icona Pop as Satin and Chenille fashion troll twins who are conjoined at their hair.
- Kunal Nayyar as Guy Diamond a glittery, silver naked troll with a highly Auto-tuned voice, one of Poppy’s Best friend
- Kenan Thompson as Tiny Diamond Guy Diamond’s new born son and good of rapping
- Ron Funches as Cooper, a giraffe-like troll who walks on all fours, one of Poppy’s best friends
- James Corden as Biggie,a chubby, friendly troll, ones of Poppy’s best friends
- Anthony Ramos as King Trollex, the king to the tecno trolls.
- Gustavo Dudamel as Trollzart, a Classical Troll.
- Ozzy Osbourne as Thrash, Former King of the Hard Rock Trolls and Barb’s father.
- Karan Soni as Riff, a pop troll
- Rachel Bloom as Barb, The Queen to the hard rock trolls
- Jamie Dornan as Chaz, a troll who loves jazz
- Kelly Clarkson as Delta Dawn, leader to the country trolls
- Sam Rockwell as Hickory, a country troll
- Flula Borg as Dickory, a country trolls
- George Clinton as King Quincy, the king to the funk trolls
- Mary J. Blige as Queen Essence, the Queen to the funk trolls
- Anderson Paak as Prince D, a funk trolls and Quincy and Essence’s son
- J Balvin as Tresillo, a Pop Troll
- Charlyne Yi as Pennywhistle, a classical trollIcona Pop as Satin and Chenille fashion troll twins who are conjoined at their hair.Kunal
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