Cast[]
- Zebedee as Thomas
- Cabot (from Theodore Tugboat) as Edward
- Nantucket as Henry
- Burke as Gordon
- Blair as James
- Zak as Percy
- Snorri (from Theodore Tugboat) as Toby
- Bluenose as Duck
- Zug as Donald
- Zip as Douglas
- Zorran as Oliver
- Boomer as Diesel
- Rock Brother 2 as Bill
- Rock Brother 3 as Ben
- Bulstrode (from TTTE) as BoCo
- Lilly the Lighthouse (from Theodore Tugboat) as Daisy
- Rebecca (from Thedore Tugboat) as Mavis
- Bobby Barge (from Theodore Tugboat) as Stepney
- Petra (from Theodore Tugboat) as Emily
- Oliver (from Theodore Tugboat) as Bertie
- Crabby (from Cars 2) as Salty
- Rock Brother 1 as Harvey
- Ten Cents as Arry
- Sunshine as Bert
- Igloo (from Theodore Tugboat) as Fergus
- Arry (from TTTE) as Skarloey
- Bert (from TTTE) as Rheneas
- Den (from TTTE) as Sir Handel
- George (from TTTE) as Peter Sam
- Bulgy (from TTTE) as Rusty
- Dart (from TTTE) as Duncan
- D261 (from TTTE) as Duke
- Spencer (from TTTE) as Freddie
- Diesel 10 (from TTTE) as Bertram
- Kelly (from TTTE) as Proteus
- Splatter and Dodge (from TTTE) as Mighty Mac
- Seabright (from Theodore Tugboat) as Arthur
- Bluenose (from Theodore Tugboat) as Lady
- Scuttlebutt Pete as Diesel 10
- Frank & Eddie as Splatter & Dodge
- Captain Zero as Sir Topham Hatt
- Kirby (from Theodore Tugboat) as Terence
- Colchester (from Theodore Tugboat) as Trevor
- Jasper the Junk Dock (from Theodore Tugboat) as Toad
- Steamer (SL Johnny Cuba) as Derek
- OJ as Bulgy
- Sally Seaplane as Elizabeth
- Warrior as George
- Johnny Cuba as Murdoch
- Grampus as Spencer
- Dorothy (from Theodore Tugboat) as Caroline
- Clayton (from Theodore Tugboat) as Cranky
- Sea Rogue as Scruffey
- The Angry Policeman (from TTTE) as Mr. Percival
- Stephen Hat [from TTTE] as Harold
- Pearl (from Theodore Tugboat) as Rosie
- Bridget Hatt [from TTTE] as Molly
- Oliver (from TTTE) as Smudger
- Cappy (from Salty's Lighthouse) as Bulstrode
- Barrington (from Theodore Tugboat) as The Spiteful Breakvan
- Lord Stinker as Jack
- Jack the Grappler as Alfie
- Izzy Gomez as Oliver (Pack)
- Old Rusty as Kelly
- The Goods Engine as Ned
- Hercules as D261
- Lillie Lightship and Emily (from Theodore Tugboat) as Annie & Clarabel
- Big Mac as Den
- Top Hat as Dart
- Truro (from Theodore Tugboat) as Norman
- Stanley (SL Puffa) as Paxton
- The Coast Guard as Sidney
- Pearl as Madge
- Dartmouth (from Theodore Tugboat) as Hector