Bill Walker
Once-ler (voice)
Graham (voice)
Coffee
Brandon
Narrator
Hogan "Hoagie" Malloy
Joseph Gargan
Eddie Krumble
Tom Snyder
Peter
Noah Brewing
Himself
Mr. Krupp / Captain Underpants (voice)
Frank (Bartender)
Hank Cooper
Rusty Griswold
Spleen (voice)
Karl
Eggbert
Brad Gurdlinger
Stu Price
Once-ler
Once-ler (voice)
Barry
Once-ler (voice)
Stu Price
Tim Lippe
Stu Price
Paxton Harding
Larry Daley's Assistant (uncredited)
News Reporter (voice)
Garret E. Barton (uncredited)
Chet Pigford
Maurice
No. 2 - Second-in-Command
Interpreter
Turtleneck
Stage Manager
Ed Carson
Monologist
Hobo Louie (voice)