Rosie/Thomas

Cast:

 * Rosie as Thomas (I know, Rosie is female)
 * Emily as Edward
 * Hank as Henry
 * Spencer as Gordon (You don't use Murdoch for Gordon because you have to use Spencer for Gordon and Murdoch for Hiro!)
 * Molly as James (I know, Molly is female)
 * Mavis as Percy (I know, Mavis is female) (Mavis and Percy are both best friends to Rosie and Thomas)
 * Edward as Toby
 * Skarloey as Duck
 * Bash & Dash as Donald & Douglas
 * Rheneas as Oliver
 * Judge Judy the Diesel as Diesel
 * Donald and Douglas as Bill & Ben
 * Flynn as BoCo
 * Elizabeth as Daisy
 * Madge as Mavis
 * Peter Sam as Stepney
 * Thomas as Emily (I know, Thomas is male)
 * Harold as Bertie
 * James as Salty
 * Kevin as Harvey
 * Edna and Rouge as Arry and Bert
 * Billy as Fergus
 * Stanley as Skarloey
 * Charlie as Rheneas
 * Duncan as Sir Handel
 * Stepney as Peter Sam
 * Sir Handel as Duncan
 * Victor as Rusty
 * Old Engine (from RWS) as Duke
 * Derek as Freddie
 * Frank & Eddie (from TUGS) as Mighty Mac
 * Oliver as Arthur
 * Duck as Lady (I know, Duck is male)
 * Diesel as Diesel 10
 * Slobber and Mudge as Splatter & Dodge
 * Lady Hatt as Sir Topham Hatt
 * Sir Topham Hatt as Lady Hatt
 * Scruff as Terence
 * Jack as Trevor
 * Whiff as Toad
 * Freddie as Derek
 * Smudger as Bulgy
 * Daisy as Elizabeth
 * Bulgy as George
 * Hiro as Murdoch
 * The Foreign Engine (from RWS) as Spencer
 * Belle as Caroline
 * Colin as Cranky
 * Shelly the Pink Freight Car as Scruffey
 * Mrs. Percival as Mr. Percival
 * Mr. Percival as Mrs. Percival
 * Bertie as Harold
 * Emily (from Theodore Tugboat) as Rosie
 * Troublesome Trucks as Themselves
 * Martha the Steam Roller as Smudger
 * D261 as Bulstrode
 * Tiger Moth as Jeremy
 * Madge as Molly
 * Arthur as Stanley
 * Percy as Whiff (Percy and Whiff are both green)
 * Terence as Scruff
 * Henry as Hank
 * Isobella as Flora
 * Murdoch as Hiro
 * Harvey as Kevin
 * Rusty as Victor
 * Pinknose as D261 (I know, Pinknose is female)
 * Scruffey as Spiteful Brakevan
 * Trevor as Jack
 * Lillie Lightship (from TUGS) as Isobella
 * Flora as Madge
 * BoCo as Flynn
 * Caroline as Belle
 * Heneritta as Old Slow Coach
 * Den and Dart as Bash and Dash
 * Gordon as Ferdinand