Danny DeVito

Cab Driver / Narrator (voice)

Lucy Liu

Leo's Mother (voice)

Freddy Rodríguez

Leo's Father (voice)

Brenda Song

Big Sister (voice)

Fred Newman

Little Spirit / Ramona / Squirrel / Pigeon (voice)

Rachel Schier

Dylan (voice)

Brian Williams

Rock Granite (voice)

Michael Hall D'Addario

Leo (voice)

Sally Winters

Girls' Mom / Knitting Lady (voice)

Todd Cummings

Narrator - Dead Fish (voice)