Douglas/Terence

Cast

 * Douglas as Terence
 * Harold aa Henry (Harold and Henry both start with H)
 * Byron as Edward
 * Jeremy as Derek
 * Tiger Moth as Bulgy
 * Bluebell (from RWS) as Bertie (Bluebell and Bertie both start with B)
 * Stepney as James
 * Neville as Peter Sam
 * Oliver as Bash
 * Thomas as Dash
 * Donald as Rusty
 * Spamcam (from RWS) as The Spiteful Brakevan
 * Jack as Donald
 * Alfie as Douglas
 * Kelly as Murdoch
 * Elizabeth as Judge Judy the Diesel
 * Annie as Molly
 * Toby as Toad (Toby and Toad both start with T)
 * Henietta as Madge
 * Luke as Toby
 * Stafford as Den
 * Kevin as Butch
 * Splatter as Splatter
 * Dodge as Dodge
 * Toad as Skarloey
 * Bash as Trevor
 * Dash as Fergus
 * Patrick as Paxton (Patrick and Paxton both start with P)
 * Percy as Duck (Percy and Duck are both Green)
 * Scruff as Oliver
 * Bulstrode as George
 * Ferdinand as Whiff
 * Whiff as Scruff
 * Big Mac (from TUGS) as Bill (Big Mac and Bill both start with B)
 * Warrior (from TUGS) as Ben
 * Nelson as The Goods Engine (from TUGS)
 * Old Slow Coach as Rosie
 * Diesel as Diesel
 * Arry as Arry
 * Bert as Bert
 * Big Bird (from Sesame Street) as Stan Marsh (from South Park)
 * Zoe (from Sesame Street) as Wendy Testaburger (from South park)
 * Captain as Thomas
 * Victor as Rheneas (Victor and Rheneas are both Red)
 * Fergus as Stepney
 * Ned as Gordon
 * Diesel 10 as Bluenose (from TUGS)
 * Daisy as Issobella
 * Max as Duncan
 * Flying Scotsman (from RWS) as BoCo
 * Big City Engine (from RWS) as Cranky
 * Clarabell as Millie
 * Big Mickey (from TUGS) as Spencer
 * D261 as Smudger (D261 and Smudger are both Green)
 * Stan Marsh 8from South Park) as Homer (from The Simpsons)
 * Wendy Testaburger (from South Park) as Marge (from The Simpsons)
 * Edward as Percy
 * Millie as Lady
 * Monty as Scruffey
 * Duncan as Oliver (from Theodore Tugboat)
 * Gordon as Stanley
 * Belle as Mavis
 * Butch as Jeremy
 * Skarloey as Donald
 * Rheneas as Douglas