Harold/Terence

Cast

 * Harold as Terence
 * Hank as Henry (Hank and Henry both start with H)
 * BoCo as Edward
 * Derek as Derek
 * Bulgy as Bulgy
 * Jeremy as Bertie
 * Salty as James (Salty and James are both Red)
 * Bertie as Peter Sam
 * Bill as Bash (Bill and Bash both start with B)
 * Ben as Dash (Ben and Dash are both twins to Biil and Bash)
 * Trevor as Rusty
 * S. C. Ruffey as The Spiteful Brakevan
 * Donald as Donald
 * Douglas as Douglas
 * Henry as Murdoch
 * Issobella as Judge Judy the Diesel
 * Whiff as Toad
 * Rosie as Madge
 * Duck as Toby
 * Toby as Den
 * Colin as Butch
 * Splatter as Splatter
 * Dodge as Dodge
 * Stanley as Skarloey (Skarloey and Stanley both start with S)
 * Jack as Fergus
 * Alfie as Trevor
 * Byron as Paxton
 * Ned as Duck
 * Kelly as Oliver
 * Patrick as George
 * Nelson as Whiff
 * Buster as Scruff
 * Bash as Bill (Bash and Bill both start with B)
 * Dash as Ben (Dash and Ben are both twins to Bash and Bill)
 * Puffa (from TUGS) as The Goods Engine (from TUGS)
 * Flora as Rosie
 * Smudger as Diesel
 * Arry as Arry
 * Bert as Bert
 * Randy Marsh (from South Park) as Stan Marsh (from South Park)
 * Sharon Marsh (from South Park) as Wendy Testaburger (from South park)
 * Ferdinand as Thomas
 * Oliver as Rheneas
 * Rocky as Stepney
 * Gordon as Gordon
 * James as Bluenose (from TUGS)
 * Caroline as Issobella
 * Duncan as The Spiteful Brakevan
 * Hiro as BoCo
 * D261 as Cranky
 * Elizabeth as Millie
 * Hector as Spencer
 * The Foreman as Homer (from The Simpsons)
 * Miss Jenny as Marge (from The Simpsons)
 * Thomas as Percy
 * Lady as Emily
 * Diesel 10 as Scruffey
 * Old Stuck.Up (from RWS) as Oliver (from Theodore Tugboat)
 * Percy as Stanley