Ed Asner Carl Fredricksen (voice) Christopher Plummer Charles F. Muntz (voice) Jordan Nagai Russell (voice) Bob Peterson Dug / Alpha (voice) Delroy Lindo Beta (voice) Jerome Ranft Gamma (voice) John Ratzenberger Construction Foreman Tom (voice) David Kaye Newsreel Announcer (voice) Elie Docter Young Ellie (voice) Mickie McGowan Police Officer Edith (voice) Danny Mann Construction Worker Steve (voice) Donald Fullilove Nurse George (voice) Jess Harnell Nurse AJ (voice) Josh Cooley Omega (voice) Pete Docter Campmaster Strauch (voice) Mark Andrews Additional Voices (voice) Bob Bergen Additional Voices (voice) Brenda Chapman Additional Voices (voice) Paul Eiding Additional Voices (voice) Sherry Lynn Additional Voices (voice)