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Top Cast
Danny DeVito
The Lorax (voice)
Ed Helms
Once-ler (voice)
Zac Efron
Ted Wiggins (voice)
Rob Riggle
Mr. Aloysius O'Hare (voice)
Taylor Swift
Audrey (voice)
Jenny Slate
Mrs. Wiggins (voice)
Betty White
Grammy Norma (voice)
Nasim Pedrad
Once-ler's Mom (voice)
Joel Swetow
1st Marketing Guy (voice)
Michael Beattie
2nd Marketing Guy (voice)
Elmarie Wendel
Aunt Grizelda (voice)
Dave B. Mitchell
1st Commercial Guy (voice)
Dempsey Pappion
2nd Commercial Guy (voice)
Danny Cooksey
Brett / Chet (voice)
Stephen Tobolowsky
Uncle Ubb (voice)
Chris Renaud
Forest Animals (voice)
Sherry Lynn
Additional Voices (voice)
Mickie McGowan
Additional Voices (voice)
Jack Angel
Additional Voices (voice)
Bob Bergen
Additional Voices (voice)
Debi Derryberry
Additional Voices (voice)
Danny Mann
Additional Voices (voice)
Fletcher Sheridan
Cy (voice)
John Cygan
Additional Voices (voice)
Bill Farmer
Additional Voices (voice)
Jess Harnell
Additional Voices (voice)
Mona Marshall
Additional Voices (voice)
Laraine Newman
Additional Voices (voice)
Jan Rabson
Additional Voices (voice)
Claira Nicole Titman
Additional Voices (voice)
Jim Ward
Additional Voices (voice)