Boulder/Percy

Cast

 * Boulder as Percy
 * The Chinese Dragon as Hiro
 * The Spiteful Breakvan as Gordon
 * George as BoCo
 * Percy as Duncan
 * James as Billy
 * Duncan as James
 * Bulgy as Thomas
 * Den as Bill
 * Dart as Ben
 * Bulstrode as Stepney
 * Bertie as Diesel 10
 * Max as Bash
 * Monty as Dash
 * D261 as Ferdinand
 * Madge as Elizabeth
 * Elizabeth as Molly
 * S. C. Ruffey as Oliver
 * Stationmaster's Wife as Rosie
 * Diesel as Harold
 * Flynn as Freddie
 * Paxton as Harvey
 * Sir Handel as Norman
 * Peter Sam as Paxton
 * Rickety (from RWS) as Rheneas
 * Splatter as Charlie
 * Dodge as Fergus
 * Arry as Neville
 * Bert as Whiff
 * Diesel 10 as Arthur
 * Toby as Dennis
 * Stafford as The Old Engine (from RWS)
 * The Barber as Salty
 * Burke (from TUGS) as Den
 * Blair (from TUGS) as Dart
 * Sidney as Rusty
 * Caroline as Olivia (a fan-made character)
 * Rusty as Diesel
 * Skarloey as Arry
 * Rheneas as Bert
 * Oscar (from Sesame Street) as Sir Topham Hatt
 * Grudgetta (from Sesame Street) as Lady Hatt
 * Hector as Jack
 * Smudger as Toby
 * Harold as Kevin
 * Jeremy as Victor
 * Duck as George
 * Mavis as Daisy
 * Gordon as Hector
 * Norman as Hank
 * Ferdinand as Mallard (from RWS)
 * Lady as Henrietta
 * Kevin as Cranky
 * Stepney as Smudger
 * Stewie Griffin (from Family Guy) as Mr. Percival
 * Angelica Pickles (from Family Guy) as Mrs. Percival
 * Toad as Jeremy
 * Molly Mouse (from Skipper & Skeeto) as Lady
 * Trevor as Scruffey
 * Oliver as D261
 * Derek as Bertie
 * Shirlena (from Tourettes Guy) as Mavis
 * Henry as Bulstrode
 * Wario (from Mario) as Culdee (from RWS)
 * Waluigi (from Mario) as Wilfred (from RWS)