Eric McCormack
Lucky (voice) (13 eps)
René Auberjonois
McLeish (voice) (13 eps)
Yvette Nicole Brown
Cookie (voice) (13 eps)
John DiMaggio
Niblet (voice) (13 eps)
Alanna Ubach
Strudel / Mr. Nut Nut (voice) (13 eps)
Michael Rapaport
Squirt (voice) (13 eps)
M. Emmet Walsh
Olaf (voice) (13 eps)
Cree Summer
Cupcake (voice) (9 eps)
Brooke Goldner
Rebound (voice) (9 eps)
Jessica DiCicco
Patches (voice) (8 eps)
Jeff Bennett
Mortimer / Senator Foster / Mr. Taco (voice) (4 eps)
Betty White
Agatha McLeish (voice) (4 eps)
Tress MacNeille
Pickypuss / Matron / Groomer #1 (voice) (3 eps)
Tara Strong
Zipper (voice) (3 eps)
Elizabeth Daily
Dolly / Tipper (voice) (3 eps)
Kath Soucie
Simon / Jilly / TV Reporter (voice) (3 eps)
Danny Cooksey
Humphrey (voice) (2 eps)
John J. York
Buford (voice) (2 eps)
Rob Paulsen
Suds (voice) (2 eps)
Pamela Adlon
Taboo (voice) (2 eps)
Grey DeLisle
Teen Boy's Mom / Tabitha (voice) (2 eps)
Jess Harnell
Announcer / Official (voice) (1 eps)
Myles Jeffrey
Teen Boy #1 / Announcer #2 (voice) (1 eps)
Tim Conway
Wally Banks (voice) (1 eps)
Dom Irrera
Princess (voice) (1 eps)
Ashley Johnson
Gina (voice) (1 eps)
Diedrich Bader
Banjo Player / Worker (voice) (1 eps)
Corey Burton
Dash Whippet / Al (voice) (1 eps)
Stacy Darrow
Mom (voice) (1 eps)
Wayne Knight
Ralphie / Construction Worker #1 (voice) (1 eps)
Anndi McAfee
Piper / Baby (voice) (1 eps)
Ted Biaselli
Cuddlesworth / Foo Foo (voice) (1 eps)
John Larroquette
Mayor (voice) (1 eps)
Frank Welker
Napoleon / Pink Parrot / Security Guard (voice) (1 eps)
Charles Shaughnessy
Ralston (voice) (1 eps)
George Takei
Mr. Julius / Monsieur Mitch (voice) (1 eps)
Clancy Brown
Salty (voice) (1 eps)
Rachel Crane
Ann (voice) (1 eps)
Kevin Michael Richardson
Ward / Mr. Grubo (voice) (1 eps)
Maria Canals-Barrera
Dr. Trudy (voice) (1 eps)
Glenne Headly
Miss Petunia (voice) (1 eps)
Tammy Trull
Sarah (voice) (1 eps)
Jennifer Carpenter
Pepper (voice) (1 eps)
Fred Stoller
Ralph (voice) (1 eps)