Byron/Harold

Cast

 * Byron as Harold
 * Kelly as Hank (Kelly and Hank are both blue)
 * Harold as BoCo
 * Patrick as Derek
 * Jeremy as Bulgy
 * Ned as Jeremy
 * Trevor as Salty
 * Jack as Bertie
 * Skarloey as Bill
 * Rheneas as Ben
 * Alfie as Trevor
 * Lord Harry (from RWS) as Scruffey
 * Sir Handel as Donald
 * Peter Sam as Douglas
 * Nelson as Henry
 * Elizabeth as Isobella
 * Isobella as Madge
 * Freddie as Whiff
 * Madge as Rosie
 * Fergus as Duck
 * Rusty as Toby
 * Butch as Colin
 * Den as Splatter
 * Dart as Dodge
 * Donald as Skarloey
 * Douglas as Rheneas
 * Bill as Byron (Bill and Byron are both yellow and they both have names starting with "B")
 * Ben as Ned
 * Salty as Kelly
 * Lorry 1 as Patrick
 * Captain as Nelson
 * Stepney as Buster
 * Bash as Bash
 * Dash as Dash
 * Terence as Puffa (from TUGS)
 * Caroline as Flora
 * Bulstrode as Smudger
 * Max as Arry
 * Monty as Bert
 * The Foreman as Randy Marsh (from South Park)
 * Miss Jenny as Sharon Marsh (from South Park)
 * Arthur as Ferdinand
 * Toby as Trevor
 * Stanley as Rocky
 * Murdoch as Gordon
 * Cranky as James
 * Daisy as Caroline
 * The Spiteful Breakvan as The Spiteful Breakvan
 * Derek as Hiro
 * Scruffey as D261
 * Lady as Elizabeth
 * Bulgy as Hector
 * Spencer as Diesel
 * The Duke of Boxford as The Foreman
 * Henry as Thomas
 * Flora as Emily
 * James as Percy
 * Caitlin as Belle
 * Lorry 2 as Diesel 10
 * Diesel 10 as Old Stuck-Up (from RWS)
 * Duck as Skarloey
 * Oliver as Rheneas
 * Thomas as Sir Handel
 * Percy as Peter Sam
 * Edward as Rusty
 * Gordon as Duncan
 * BoCo as Duke
 * Whiff as Freddie
 * Hank as Boomer (from TUGS)
 * Mavis as Daisy
 * Splatter as Burke (from TUGS)
 * Dodge as Blair (from TUGS)
 * Lady Hatt as Mrs. Percival
 * Sir Topham Hatt as Mr. Percival