Nia (Thomas)/Thomas


 * Nia as Thomas
 * Ashima as Edward
 * Caitlin as Henry
 * Rebecca as Gordon
 * Mavis as James
 * Hong Mei as Percy
 * Lady as Toby
 * Gina as Duck
 * Annie as Donald
 * Clarabell as Douglas
 * Caroline as Oliver
 * Judge Judy the Diesel as as Diesel
 * Victoria (from RWS) as Bill
 * Helena (from RWS) as Ben
 * Madge as BoCo
 * Splatter as Daisy
 * James as Mavis
 * Belle as Stepney
 * Charlie as Emily
 * Kevin as Bertie
 * Derek as Salty
 * Colin as Harvey
 * Hector as Arry
 * Scruffey as Bert
 * Trevor as Fergus
 * Jack as Skarloey
 * Alfie as Rheneas
 * Byron as Sir Handel
 * Ned as Peter Sam
 * Kelly as Rusty
 * Patrick as Duncan
 * Nelson as Duke
 * Buster as Freddie
 * Bash as ;Mighty
 * Dash as Mac
 * Ivan as Arthur
 * Toby as Lady
 * Bristleback the Diesel as Diesel 10
 * Daisy as Splatter
 * Elizabeth as Dodge
 * Charubala as Sir Topham Hatt
 * Thumper as Terence
 * Fergus as Trevor
 * Henrietta as Toad
 * Salty as Derek
 * Smudger as Bulgy
 * Dodge as Elizabeth
 * Spencer as George
 * Yong Bao as Murdoch
 * George as Spencer
 * Oliver as Caroline
 * Carly as Cranky
 * Bert as Scruffey
 * The Foreman as Mr. Percival
 * Miss Jenny as Mrs. Percival
 * Emerson as Harold
 * Stanley as Rosie
 * Bulgy as Smudger
 * Oliver (from Theodore Tugboat) as Bustrode
 * Rosie as Stanley
 * Farnsworth (from The Little Engine That Could) as The Spiteful Brakevan
 * Skarloey as Jack
 * Rheneas as Alfie
 * Luke as Oliver (Pack)
 * Godred (from RWS) as Max
 * Lord Harry (from RWS) as Monty
 * Rusty as Kelly
 * Sir Handel as Byron
 * Peter Sam as Ned
 * Millie as Isobella
 * Duke as Nelson
 * Duncan as Patrick
 * Freddie as Buster
 * Mr. Percival as The Foreman
 * Mrs. Percival as Miss Jenny
 * Zorran (from TUGS) as Lorry 1
 * Zebedee (from TUGS) as Lorry 2
 * Zak (from TUGS) as Lorry 3
 * Vinnie as D261
 * Samson as Whiff
 * Dennis as Scruff
 * Scruff as Dennis
 * Victor as Jeremy
 * Freidia as Molly
 * Billy Shoepack (from TUGS) as Billy
 * Stepney as Belle
 * Bertram as Flynn
 * Flora as Old Slow Coach
 * Mighty as Bash
 * Mac as Dash
 * Hiro as Ferdinand
 * Donald as Annie
 * Douglas as Calrabell
 * Colin as Rocky
 * Captain as Proteus
 * Axel as Hank
 * Rocky as Colin
 * Emily as Charlie
 * Arry as Hector
 * Flynn as Bertram
 * Proteus as Captain
 * Ferdinand as Hiro
 * Jeremy as Victor
 * Bertie as Kevin
 * Whiff as Samson