Ellen Burstyn as Mrs. Stocks (voice)

Tom Berenger as (voice)

J. Kenneth Campbell as (voice)

Richard Chaves as (voice)

Josh Cruze as (voice)

Willem Dafoe as Elephant Grass (voice)

Robert De Niro as Great Sewer (voice)

Brian Dennehy as (voice)

Kevin Dillon as Jack (voice)

Matt Dillon as Mike (voice)

Robert Downey Jr. as (voice)

Michael J. Fox as Raymond Griffiths (voice)

Mark Harmon as (voice)

John Heard as Johnny Boy (voice)

Judd Nelson as (voice)

Martin Sheen as Alan (voice)

Eric Roberts as (voice)

Sean Penn as (voice)

Kathleen Turner as Lynda Van Devanter (voice)

Robin Williams as (voice)

Harvey Keitel as Donald Jacques (voice)