Pepper Ann

Kathleen Wilhoite

Pepper Ann (voice)

Danny Cooksey

Milo (voice)

Clea Lewis

Nicky (voice)

April Winchell

Mom (voice)

Kimmy Robertson

Gwen Mezzrow

Luke Perry

Stewart Walldinger (voice)

Don Adams

Principal Hickey, Principal Hickey (voice)

Hadley Kay

Alex Trebek

Lauren Tom

Nicole Sullivan

Tundra Woman (voice)

Evel Knievel

Mark Hamill

Jodi Benson

Amber O'Malley (voice)

Isabel Sanford

Bernice (voice)

Tara Strong

Brenda / Female Scientist (voice)

Paddi Edwards

Vera Groober-Schwartz (voice)

Tino Insana

Uncle Jo Jo (voice)

Jess Harnell

Abe (voice), Male Scientist / Nigel / Mailman (voice)

Kathy Najimy

Coach Doogan (voice)

Jenna Von Oÿ

Trinket (voice)

Bebe Neuwirth

Ms. Bladdar (voice)

Jason Marsden

Prep School Guy (voice)

Jeff Bennett

Dieter Liederhosen / Emit Swink / Shelf McClain (voice), Dieter Liederhosen (voice), Larry / Additional Voices (voice), Dieter Liederhosen / Shelf McClain (voice), Grandpa Leo / Additional Voices (voice), Craig Bean / Dieter Liederhosen / Vittorio (voice), Noah / Additional Voices (voice), Dieter Liederhosen / Craig Bean / Shelf McClain (voice), J.B. / Additional Voices (voice), Craig Bean (voice), Dieter Liederhosen / Pink-Eye Pete (voice)

Don Lake

Mr. Sherman Finky (voice), Mr. Sherman Finky / Butler (voice)

Candi Milo

Constance Goldman / Deeana / Biana (voice), Constance Goldman (voice), Rose (voice)

Pamela Adlon

Moose Pearson / Goose O'Shaunassy (voice), Moose Pearson (voice)

Wallace Langham

Wayne Macabre (voice; uncredited)

Hedy Burress

Effie Shrugg (voice)

Jim Cummings

Mr. Roland Carter (voice)

Susan Tolsky

Aunt Janie Diggety (voice), Aunt Janie Diggety / Aunt Lanie (voice)

Shaun Fleming

Cookie (voice)

Cree Summer

Tessa James / Vanessa James (voice), Crying Girl (voice)

Kenn Michael

Lamar Abu Dabe (voice), Lamar Abudabe (voice)

Maurice LaMarche

Chuck Pearson / Jeweler (voice)

Kath Soucie

Cissy Rooney / Supermodel Mindy (voice), Mean Girl (voice), Mail Lady (voice)

Max Brooks

Worried Executive #1 (voice)

Phil LaMarr

Stubborn Executive / Hippie Guy (voice)

Cam Clarke

Stewart Walldinger (voice)