Brandon Soo Hoo as Tom Lee (voice)

Henry Golding as Hu (voice)

Lucy Liu as Nua Kua / Cynthia (voice)

Sandra Oh as Mistral (voice)

Michelle Yeoh as Loo (voice)

Bowen Yang as Sidney (voice)

Leah Lewis as Räv (voice)

Tan Kheng Hua as Mrs. Lee (voice)

Sherry Cola as Naomi (voice)

Deborah S. Craig as Pig (voice)

Jo Koy as Rooster (voice)

Greta Lee as Rabbit (voice)

Diana Lee Inosanto as Horse (voice)

Patrick Gallagher as Dog (voice)

Poppy Liu as Snake (voice)

Lydie Loots as Baby Tom (voice)

Raman Hui Shing-Ngai as Radio Announcer (voice)

Ryan Christopher Lee as Liam (voice)

Josh Zuckerman as Rudy (voice)