Duke as Arthur
Molly as D.W.
Flora as Kate
Duck as Pal
Rosie as Jane
Hiro as David
Mavis as Francine
Ada (from RWS) as Sue Ellen
Bertram as Buster
Caitlin as Fern
Bertie as George
Harvey as Binky
Emily as Muffy
Jane (from RWS) as Prunella
Stephen as Brain
Mighty Mac as Tibble Twins
OJ (from TUGS) as Dad
Pearl (from TUGS) as Mom
Daisy as Thora
Flying Scotsman as Mr. Ratburn
Captain Star (from Salty's Lighthouse) as Paige Turner
Thomas as Grandpa Dave
Emily (from Theodore Tugboat) as Mrs. MacGrady
Mario (from Mario) as Mr. Haney
Peach (from Mario) as Nadine
Lillie Lightship (from TUGS) as Emily
Diesel 10 as Rattles
Judge Judy as Molly
Terence as Mr. Morest
Kevin as James
Pip (from RWS) as Ms. Morgan
Emma (from RWS) as Buster's Mom
Catherine (from RWS) as Catherine
Splatter as Toby
Dodge as Slink
Proteus as Ed Crosswire
Caroline as Millicent Crosswire
Mallard (from RWS) as The Policeman
Hank as Oliver Frensky
Lady as Laverne Frensky
Murdoch as Mike