Muffy Crosswire (voice)

Melissa Altro

Arthur

William Healy

Mr. Ratburn / Bionic Bunny (voice)

Arthur Holden

Mr. Read / Binky Barnes / Bailey (voice)

Bruce Dinsmore

Francine Frensky (voice)

Jodie Resther

Brain

Max Friedman Cole

Buster Baxter (voice)

Daniel Brochu

Arthur Read (voice)

Justin Bradley

Jane Read

Sonja Ball

D.W Read (voice)

Oliver Grainger

Prunella (voice)

Tamar Kozlov

Sue Ellen

Patricia Rodriguez

Baby Kate (voice)

Tracy Braunstein

Fern Walters

Holly G. Frankel

Pal (voice)

Simon Peacock

George

Eleanor Noble

Alan "The Brain" Powers (voice)

Steven Crowder

Grandma Thora (voice)

Joanna Noyes

Alan "The Brain" Powers (voice)

Luke Reid

Bitzi Baxter

Ellen David

Sue Ellen Armstrong (voice)

Jessica Kardos

Bud/Mrs. Compson

Julie Lemieux

Emily (voice)

Sally Taylor-Isherwood

Carl

Dylan Hoerner

Catherine

Robyn Hickey

Emily (voice)

Vanessa Lengies

Cheik

Yatharth Bhatt

George (voice)

Mitchell David Rothpan

D.W.

Andrew Dayton

Tommy Tibble (voice)

Jonathan Koensgen

Arthur Read (voice)

Michael Yarmush

Timmy Tibble (voice)

Ricky Mabe

Tommy Tibble (voice)

Jake Sim

Catherine Frensky (voice)

Alexina Cowan

D.W Read (voice)

Michael Caloz

Timmy Tibble (voice)

Jacob Ewaniuk

Catherine Frensky (voice)

Robyn Thaler Hickey

D.W. Read (voice)

Robert Naylor

Arthur Read (voice)

Dallas Jokic

Timmy Tibble (voice)

Samuel Holden

Alan "The Brain" Powers (voice)

Lyle O'Donohoe

D.W. Read (voice)

Jason Szwimmer

Alan "The Brain" Powers (voice)

Siam Yu

Arthur Read (voice)

Cameron Ansell

Alan "The Brain" Powers (voice)

Paul Stuart-Brown

Timmy Tibble (voice) / Tommy Tibble (voice)

Tyler Brody Stein

Alan "The Brain" Powers (voice)

Alex Hood

Arthur Read (voice)

Drew Adkins

D.W. Read (voice)

Jake Beale

Tommy Tibble (voice)

Jake Roseman

Timmy Tibble (voice)

Dakota Goyo

Timmy Tibble (voice)

Christopher Lortie

Arthur Read (voice)

Mark Rendall

Tommy Tibble (voice)

Aaron Grunfeld

Tommy Tibble (voice)

Ryan Tilson

Arthur Read (voice)

Jacob Ursomarzo

D.W. Read (voice)

Christian Distefano

Arthur Read (voice)

Roman Lutterotti

D.W. Read (voice)

Ethan Pugiotto

Alan "The Brain" Powers (voice)

Evan Blaylock

George (voice)

Evan Smirnow

Oliver Frensky (voice) / Oliver Frensky / Henry Ford (voice)

Mark Camacho

Mrs. MacGrady (voice) / Mrs. MacGrady

Bronwen Mantel