Robert Downey Jr.
Mr. Willowby
Stockard Channing
Miss Adelaide
Kevin Clash
Father Mouse (voice)
Julianne Buescher
Beverly Mouse (voice)
David Rudman
Ned Mouse (voice)
Steve Whitmire
Kermit the Frog / Bear / Owl (voice)
Bill Barretta
Bear (voice)
Bruce Lanoil
Bear / Owl (voice)