Bruce Dinsmore
Mr. Read / Binky Barnes / Bailey (voice) (493 eps)
Jodie Resther
Francine Frensky (voice) (493 eps)
Daniel Brochu
Buster Baxter (voice) (493 eps)
Sonja Ball
Mrs. Read (voice) (493 eps)
Arthur Holden
Mr. Ratburn / Bionic Bunny (voice) (493 eps)
Tracy Braunstein
Baby Kate (voice) (493 eps)
Simon Peacock
Pal (voice) (493 eps)
Joanna Noyes
Grandma Thora (voice) (493 eps)
Tamar Kozlov
Prunella (voice) (493 eps)
Jessica Kardos
Sue Ellen Armstrong (voice) (266 eps)
Sally Taylor-Isherwood
Emily (voice) (266 eps)
Eleanor Noble
George (voice) (266 eps)
Patricia Rodríguez
Sue Ellen Armstrong / Catherine Frensky (voice) (227 eps)
Vanessa Lengies
Emily (voice) (227 eps)
Mitchell David Rothpan
George (voice) (208 eps)
Jonathan Koensgen
Tommy Tibble (voice) (190 eps)
Michael Yarmush
Arthur Read (voice) (170 eps)
Ricky Mabe
Timmy Tibble (voice) (170 eps)
Jake Sim
Tommy Tibble (voice) (169 eps)
Luke Reid
Alan "The Brain" Powers (voice) (150 eps)
Alexina Cowan
Catherine Frensky (voice) (136 eps)
Michael Caloz
D.W Read (voice) (130 eps)
Jacob Ewaniuk
Timmy Tibble (voice) (130 eps)
Robyn Thaler Hickey
Catherine Frensky (voice) (130 eps)
Robert Naylor
D.W. Read (voice) (97 eps)
Dallas Jokic
Arthur Read (voice) (78 eps)
Samuel Holden
Timmy Tibble (voice) (78 eps)
Lyle Lettau
Alan "The Brain" Powers (voice) (78 eps)
Jason Szwimmer
D.W. Read (voice) (77 eps)
Siam Yu
Alan "The Brain" Powers (voice) (77 eps)
Oliver Grainger
D.W Read (voice) (60 eps)
Cameron Ansell
Arthur Read (voice) (58 eps)
Paul Stuart-Brown
Alan "The Brain" Powers (voice) (58 eps)
Tyler Brody Stein
Timmy Tibble (voice) (58 eps)
Alex Hood
Alan "The Brain" Powers (voice) (57 eps)
Steven Crowder
Alan "The Brain" Powers (voice) (40 eps)
Drew Adkins
Arthur Read (voice) (39 eps)
Jake Beale
D.W. Read (voice) (39 eps)
Jake Roseman
Tommy Tibble (voice) (39 eps)
Dakota Goyo
Timmy Tibble (voice) (39 eps)
Christopher Lortie
Timmy Tibble (voice) (39 eps)
William Healy
Arthur Read (voice) (38 eps)
Andrew Dayton
D.W. Read (voice) (38 eps)
Mark Rendall
Arthur Read (voice) (38 eps)
Aaron Grunfeld
Tommy Tibble (voice) (38 eps)
Ryan Tilson
Tommy Tibble (voice) (38 eps)
Jacob Ursomarzo
Arthur Read (voice) (27 eps)
Max Friedman-Cole
Alan "The Brain" Powers (voice) (27 eps)
Christian Distefano
D.W. Read (voice) (27 eps)
Roman Lutterotti
Arthur Read (voice) (26 eps)
Ethan Pugiotto
D.W. Read (voice) (26 eps)
Evan Blaylock
Alan "The Brain" Powers (voice) (26 eps)
Justin Bradley
Arthur Read (voice) (20 eps)
Evan Smirnow
George (voice) (19 eps)
Mark Camacho
Oliver Frensky (voice) (7 eps)
Bronwen Mantel
Mrs. MacGrady (voice) (5 eps)
Holly Gauthier-Frankel
Fern Walters (voice) (4 eps)
Michelle Kwan
Michelle Kwan (voice) (2 eps)
Fred Rogers
Mr. Rogers (voice) (2 eps)
Lance Armstrong
Lance Armstrong (voice) (2 eps)
A.J. Henderson
Ed Crosswire (voice) (2 eps)
Yo-Yo Ma
Yo-Yo Ma (voice) (2 eps)
Joshua Redman
Joshua Redman (voice) (2 eps)
Walter Massey
Mr. Haney (voice) (2 eps)
Brigid Tierney
Jenna Morgan (voice) (2 eps)
Rikee Madoff
Cecilia Tingley (voice) (2 eps)
Art Garfunkel
Self (voice) (2 eps)
Johnny Damon
Johnny Playmon (voice) (1 eps)
Edgar Rentería
Batería (voice) (1 eps)
Larry King
Larry King (1 eps)
Mike Timlin
Winlin (voice) (1 eps)
Jane Wheeler
Mrs. Barnes (voice) (1 eps)
Graeme Jokic
Young Fritz (voice) (1 eps)
Ellen David
Bitzi Baxter (voice) (1 eps)
Philip Seymour Hoffman
William Fillmore Toffman (voice) (1 eps)
Hayley Reynolds
Nadine Flamberghast (voice) (1 eps)
Alyson Leah
Vicita Molina (voice) (1 eps)
Rick Jones
Jacob Katzenellenbogan (voice) (1 eps)
Marc Brown
Marc Brown (voice) (1 eps)
Kate Hutchison
Paige Turner (voice) (1 eps)
John Lewis
John Lewis (voice) (1 eps)
Krystal Meadows
Ladonna Compson (voice) (1 eps)
Felicia Shulman
Paige Turner (voice) (1 eps)
Jane Lynch
Patty Ratburn (voice) (1 eps)
Jane Woods
Laverne Frensky (uncredited) (1 eps)