Kathy Lane
The Cat in the Hat
Mr. Hunch
The Farmer
Marco (segment "McElligot's Pool")
The Ad Woman
The Ad Man
Marco (segment "Mulberry Street")
Sgt. Mulvaney
The Voice of America (voice)
Yertle (as Andrae Crouch)
Mack
Turtle Choir Member
Turtle Choir Member (as Kristle Edwards)
Turtle Choir Member / Green Eggs and Ham Player
Turtle Choir Member (as Kevin Stea)
The Father
Daughter
Sam-I-Am (voice)
Green Eggs and Ham Player
Green Eggs and Ham Player (as T.J. Espinoza)
The Who-Villian
The Onceler
Dr. Seuss (voice)
Mayzie / Horton / Egg / Mouse / Short Hunter / Fat Hunter / Tall Hunter / Elephant Bird / Audience Members / Hitler Lives Narrator / Van Itch / Chief Yookeroo (voice)
Additional Voice Over (voice)
Self - at Potsdam (archive footage) (uncredited)
Grandfather Yook (voice) (uncredited)
Cindy Lou Who (voice) (archive footage) (uncredited)
Self - with Hitler in Nuremberg (archive footage) (uncredited)
Self (archive footage) (uncredited)
Lorax / The Onceler / Sylvester McMonkey McBean / Sneetches (voice) (archive footage) (uncredited)
The Grinch (voice) (archive footage) (uncredited)
Sneetches (voice) (archive footage) (uncredited)