羅雷司

泰勒絲 as Audrey (voice) Jenny Slate as Mrs. Wiggins (voice) Nasim Pedrad as Once-ler's Mom (voice) 戴夫·B·米歇爾 as 1st Commercial Guy (voice) Dempsey Pappion as 2nd Commercial Guy (voice) Chris Renaud as Forest Animals (voice) Debi Derryberry as Additional Voices (voice) Elmarie Wendel as Aunt Grizelda (voice) Danny Cooksey as Brett / Chet (voice) Fletcher Sheridan as Cy (voice) John Cygan as Additional Voices (voice) Bill Farmer as Additional Voices (voice) Joel Swetow as 1st Marketing Guy (voice) Danny Mann as Additional Voices (voice) Jess Harnell as Additional Voices (voice) 艾德·赫姆斯 as Once-ler (voice) Bob Bergen as Additional Voices (voice) Mona Marshall as Additional Voices (voice) 柴克·艾弗隆 as Ted Wiggins (voice) Michael Beattie as 2nd Marketing Guy (voice) Jan Rabson as Additional Voices (voice) Claira Nicole Titman as Additional Voices (voice) Betty White as Grammy Norma (voice) Sherry Lynn as Additional Voices (voice) Jack Angel as Additional Voices (voice) Rob Riggle as Mr. Aloysius O'Hare (voice) Stephen Tobolowsky as Uncle Ubb (voice) Mickie McGowan as Additional Voices (voice) 拉瑞尼·紐曼 as Additional Voices (voice) Jim Ward as Additional Voices (voice) Danny DeVito as The Lorax (voice)

蘭迪·湯 Sound Re-Recording Mixer, Supervising Sound Editor, Sound Designer Carter Goodrich Character Designer Ken Daurio Executive Producer, Screenplay 凱爾·巴拉達 Co-Director 蘇斯博士 Book Daniel Laurie ADR Supervisor, Dialogue Editor Audrey Geisel Executive Producer Ken Schretzmann Editor Yarrow Cheney Production Design Dennis Leonard Supervising Sound Editor Chris Renaud Director Claire Dodgson Editor 葛瑞·裏佐 Sound Re-Recording Mixer Chris Meledandri Producer Eric Guillon Character Designer Julie Minasian Vocals John Powell Original Music Composer, Songs Cinco Paul Executive Producer, Songs, Screenplay