Scruff/Harold

Cast

 * Scruff as Harold
 * Oliver as Hank
 * Peter Sam as BoCo
 * Hank as Derek
 * Diesel as Bulgy
 * Duck as Jeremy
 * Kevin as Salty
 * Percy as Bertie
 * Den as Bill
 * Dart as Ben
 * Edward as Trevor
 * James as Scruffey
 * Bash as Donald
 * Dash as Douglas
 * Hiro as Henry (Hiro and Henry are both start with H)
 * Caroline as Isobella
 * Lady as Madge
 * Rheneas as Whiff
 * Flora as Rosie
 * Stanley as Duck
 * Derek as Toby
 * Charlie as Colin
 * Splatter as Splatter
 * Dodge as Dodge
 * Rusty as Stanley (Rusty and Stanley are both end with y)
 * Victor as Jack
 * Stepney as Alfie
 * Dennis as Byron
 * Henry as Ned
 * Fergus as Kelly
 * George as Patrick
 * Freddie as Nelson
 * Duke as Buster
 * Magnus (a made-up engine) as Bash
 * Myggen (a made-up engine) as Dash
 * Whiff as Puffa (from TUGS)
 * Mavis as Flora
 * The Spiteful Breakvan as Smudger
 * Arry as Arry
 * Bert as Bert
 * Skipper (from Skipper & Skeeto) as Randy Marsh (from South Park)
 * Molly Mouse (from Skipper & Skeeto) as Sharon Marsh (from South Park)
 * Billy as Ferdinand
 * Doc (from The Little Engine That Could) as Oliver
 * Paxton as Rocky
 * Salty as Gordon
 * Farnsworth (from The Little Engine That Could) as James
 * Judge Judy the Diesel as Caroline
 * Duncan as The Spiteful Breakvan
 * Pete (From The Little Engine That Could) as Hiro
 * The Big City Engine (from RWS) as D261
 * Daisy as Elizabeth
 * Big Mickey (from TUGS) as Hector
 * Sixteen (from RWS) as Diesel
 * Fungy Frog (from Skipper & Skeeto) as The Foreman
 * Lizzie Bee (from Skipper & Skeeto) as Miss Jenny
 * Ripslinger (from Planes) as Godred (from RWS)
 * Mighty Moe (from TUGS) as Harvey
 * The Breakdown Train as Toad
 * Hamlet (A made up character) as Cranky
 * Budgie (from Budgie The Helicopter) as Thomas
 * Belle as Emily
 * Dusty Crophopper (from Planes) as Percy
 * Madge as Belle
 * Bulstrode as Diesel 10
 * Smudger as Old Stuck-Up (from RWS)
 * Theodore (from Theodore Tugboat) as Skarloey
 * Hank (from Theodore Tugboat) as Rheneas
 * George (from Theodore Tugboat) as Sir Handel
 * Foduck (from Theodore Tugboat) as Peter Sam
 * Digby (from Theodore Tugboat) as Rusty
 * Guysborough (from Theodore Tugboat) as Duncan
 * Truro (from Theodore Tugboat) as Duke
 * Fundy (from Theodore Tugboat) as Freddie
 * Northumberland (from Theodore Tugboat) as Boomer (from TUGS)
 * Emily (from Theodore Tugboat) as Daisy
 * Zip (from TUGS) as Burke (from TUGS)
 * Zug (from TUGS) as Blair (from TUGS)
 * Wendy (from South Park) as Mrs. Percival
 * Stan Marsh (from South Park) as Mr. Percival
 * Arthur as Stepney
 * Thomas as Billy
 * Sir Handel as Sidney (Sir Handel and Sidney are both blue)
 * City of Truro (from RWS) as Victor
 * Zorran (from TUGS) as Den
 * Zak (from TUGS) as Dart
 * Zebedee (from TUGS) as Norman
 * Terence as Scruff
 * Gordon as Edward (Both are tender engines)
 * BoCo as Murdoch
 * Spamcan (from RWS) as Spencer
 * Diesel 10 as George
 * Georgia (from The Little Engine That Could) as Caitlin
 * Molly as Mavis (Molly and Mavis are both start with M)
 * Emily as Lady (Emily and Lady are both end with y)
 * Skarloey as Nevile
 * Toby as Luke
 * Harvey as Paxton
 * Bill as Mighty
 * Ben as Mac
 * Ivo Hugh (from RWS) as Terence
 * Ten Cents (from TUGS) as Hercules (from TUGS)
 * Rosie as Molly
 * Fire Chief (from TUGS) as Bear (from RWS)
 * Donald as Lorry 1
 * Douglas as Lorry 2
 * Stanley (from RWS) as Lorry 3
 * Toad as Charlie
 * Frank (from RWS) as Dennis
 * Stafford as Kevin
 * Clayton (from Theodore Tugboat) as Stephen
 * Owen (from Theodore Tugboat) as Connor
 * Mike (from RWS) as Stafford
 * Luke as Winston
 * Jebediah (from The Little Engine That Could) as Merrick
 * Flying Scotsman (from RWS) as Owen
 * Duchess of Hamilton (from RWS) as Old Slow Coach
 * Tillie (from The Little Engine That Could) as Catherine (from RWS)
 * Mavis as Molly (Mavis and Molly are both start with M)
 * Bertie as Fergus
 * Molly and Milly (made up characters) as Isabel and Dulcie (from RWS)
 * Leah (A made up chareter) as Tillie (from The Little Engine That Could)
 * Jesus (a made up engine) as Wilbert (from RWS)
 * Montana (from Play Safe/Casey Jr. And Friends) as Butch
 * Thumper as Bertram
 * Butch as Porter
 * Bear (from RWS) as Thumper
 * Millie as Henrietta
 * Porter as Flynn