Walt Dohrn Director Anna Kendrick Poppy Voice Justin Timberlake Branch Voice Rachel Bloom Barb Voice James Corden Biggie Voice Ron Funches Cooper Voice Kelly Clarkson Delta Dawn Voice Anderson .Paak Prince D Voice Sam Rockwell Hickory Voice George Clinton King Quincy Voice Mary J. Blige Queen Essence Voice Kenan Thompson Tiny Diamond Voice Kunal Nayyar Guy Diamond Voice Caroline Hjelt Chenille Voice Aino Jawo Satin Voice J Balvin Tresillo Voice Flula Borg Dickory Voice Ester Dean Legsly Voice Jamie Dornan Chaz Voice Gustavo Dudamel Trollzart Voice Ozzy Osbourne King Thrash Voice Anthony Ramos King Trollex Voice Karan Soni Riff Voice Charlyne Yi Pennywhistle Voice David P. Smith Co-Director Jonathan Aibel Screenwriter Glenn Berger Screenwriter Maya Forbes Screenwriter Wallace Wolodarsky Screenwriter Elizabeth Tippet Screenwriter Gina Shay Producer Dannie Festa Executive Producer Jana Spotts Executive Producer Nick Fletcher Film Editing Theodore Shapiro Original Music Kendal Cronkhite Production Design Timothy Lamb Art Director Christi Soper Casting