Horton (voice)
Mayor (voice)
Kangaroo (voice)
Vlad (voice)
Morton (voice)
Councilman / Yummo Wickersham (voice)
Dr. Mary Lou Larue (voice)
Tommy (voice)
Sally O'Malley (voice)
Mrs. Quilligan (voice)
Narrator (voice)
Rudy (voice)
Miss Yelp (voice)
JoJo (voice)
Hedy / Hooly (voice)
Old Time Who (voice)
Helen (voice)
Heather (voice)
Town Cryer (voice)
Who (voice)
Another Who (voice)
Who Mom (voice)
Hildy / Holly (voice)
Who Kid (voice)
