Spencer/Trevor

Cast

 * Spencer as Trevor (Spencer and Trevor both end with R)
 * Harvey as Toby
 * Percy as Neville
 * Mallard (from RWS) as Spencer (Mallard and Spencer are both Tender Engines)
 * Thomas as Cranky
 * Peter Sam as Fergus
 * Edward as Edward
 * Hiro as Oliver
 * Bash as Whiff
 * Dash as Scruff
 * Fergus as Duck
 * Smudger as Diesel 10
 * Den as Migthy
 * Dart as Mac
 * Murdoch as Salty
 * Elizabeth as Mavis
 * Rosie as Daisy
 * Kevin as Jack
 * Molly as Belle
 * Skarloey as Terence
 * Billy as BoCo (Billy and BoCo both start with B)
 * Colin as Peter Sam (Colin and Peter Sam are both Green)
 * Bulgy as Splatter
 * George as Dodge
 * Stepney as Percy (Stepney and Percy both end with P)
 * Bertie as Harold
 * Trevor as Jeremy
 * Butch as Hank
 * Terence as Harvey
 * Frank (from RWS) as Winston
 * Patrick as Bulgy
 * The Old Engine (from RWS) as Captain
 * Fred (from RWS) as Victor
 * Donald as Bill
 * Douglas as Ben
 * Charlie as Murdoch
 * The Spiteful Brakevan as Diesel
 * Bill as Arry
 * Ben as Bert (Ben and bert both start with B)
 * The Duke of Bixford as Jem Cole
 * Scruff as Bertie
 * Rheneas as Thomas
 * Rusty as Paxton
 * Victor as Luke
 * Arry as Duncan
 * Daisy as Isobella
 * Bert as Hector
 * Sir Handel as Arthur
 * Gordon as Gordon
 * Flora as Flora
 * Cranky as James
 * Bulstrode as Smudger
 * Sir Topham Hatt as The Vicar of Wellsworth (Sir Topham Hatt and The Vicar of Wellsworth wear both Black)
 * Jeremy as Skarloey
 * Mavis as Lady
 * Diesel as Scruffey
 * Harold as Rheneas
 * Emily as Madge (Emily and Madge are both  Green)