Use stream of consciousness to answer the following. The second adaptation of the book (following the 1972 animated television special), the film builds on the book by expanding the story of the Lorax and 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, Ted's love interest (voiced by Taylor Swift), Aloysius O'Hare (Rob Riggle), Mrs. Wiggins, Ted's mother (Jenny Slate), and Grammy Norma, Ted's grandmother (Betty White).

Voice of the once ler in the lorax?
The relevant sentence in the passage is: The cast includes Danny DeVito as the Lorax, Ed Helms as the Once-ler and Zac Efron as Ted. Final answer: Ed Helms.