It is the second adaptation of the book, following the 1972 animated musical television special. It builds on the book by expanding the story of Ted, the previously unnamed boy who visits the Once-ler. The cast includes Danny DeVito as the Lorax, Ed Helms as the Once-ler and Zac Efron as Ted. New characters introduced in the film are Audrey, who is voiced by Taylor Swift, Aloysius O'Hare, voiced by Rob Riggle, and Grammy Norma, voiced by Betty White. The film was a box office success, although it received mixed reviews.