Arthur's Mystery Envelope

Michael Caloz

D.W Read (voice)

Alex Hood

Alan "The Brain" Powers

Cameron Ansell

Arthur Read

Jessica Kardos

Sue Ellen Armstrong

Justin Bradley

Arthur Read

Mark Rendall

Arthur Read

Bruce Dinsmore

Mr. Read / Binky Barnes / Bailey (voice)

Oliver Grainger

D.W Read

Luke Reid

Alan "The Brain" Powers (voice)

Melissa Altro

Muffy Crosswire (voice)

Jodie Resther

Francine Frensky (voice)

Michael Yarmush

Arthur Read (voice)

Daniel Brochu

Buster Baxter (voice)

Sonja Ball

Mrs. Read (voice)

Arthur Holden

Mr. Ratburn / Bionic Bunny (voice)

Tracy Braunstein

Baby Kate (voice)

Simon Peacock

Pal (voice)

Joanna Noyes

Grandma Thora (voice)

Tamar Kozlov

Prunella (voice)

Patricia Rodríguez

Sue Ellen Armstrong / Catherine Frensky (voice)

Jonathan Koensgen

Tommy Tibble (voice)

Ricky Mabe

Timmy Tibble (voice)

Vanessa Lengies

Emily (voice)

Mitchell David Rothpan

George (voice)