Big City Engine/Henry

Cast

 * Big City Engine as Henry (Big City Engine and Henry are both green tender engines)
 * Farnsworth (from The Little Engine That Could) as Flynn (Farnsworth and Flynn's names both start with "F")
 * The Freight Engine (from The Little Engine That Could (Book)) as Thomas
 * Bluenose (from TUGS) as Diesel
 * The Shiny Engine (from The Little Engine That Could (Book)) as Spencer
 * Spencer as Scruff
 * Mallard (from RWS) as Trevor
 * Lord Harry (from RWS) as Victor
 * Den as Bill
 * Dart as Ben
 * Godred (from RWS) as Kevin
 * Rusty as Alfred the Loaned B12
 * Splatter as Splatter
 * Dodge as Dodge
 * Diesel 10 as Bear (from RWS)
 * Madge as Judge Judy the Diesel
 * Elizabeth as Lady
 * Sea Rogue (from Salty's Lighthouse) as Bertie
 * Carla (from Theodore Tugboat) as Molly
 * Hector as Percy
 * Pete (from The Little Engine That Could) as Ferdinand
 * Bobby Barge (from Theodore Tugboat) as Colin
 * Bash as Lorry 1
 * Dash as Lorry 2
 * Oliver (from Theodore Tugboat) as Bert (from RWS)
 * Scruffey as Charlie
 * Fred Pelhay (from RWS) as Neville
 * Zebedee (from TUGS) as BoCo
 * Zak (from TUGS) as Rex (from RWS)
 * Diesel as Duke
 * Stanley/No. 2 (from RWS) as Duncan
 * Bertram as Rusty
 * Smudger as Hiro
 * Zip (from TUGS) as Den
 * Zug (from TUGS) as Dart
 * Norman as Wilbert (from RWS)
 * Rebecca (from Theodore Tugboat) as Rosie (Rebecca and Rosie's names both start with "R")
 * BoCo as Spamcan (from RWS)
 * Bill as Norman
 * Ben as Paxton
 * Stewie Griffin (from Family Guy) as Mr. Percival
 * Angelica Pickles (from Rugrats) as Mrs. Percival
 * Snorri (from Theodore Tugboat) as Dennis
 * R. Boat (from Theodore Tugboat) as Toby
 * The Spiteful Breakvan as Ivo Hugh (from RWS)
 * Stafford as Warrior (from TUGS)
 * Big Mac (from TUGS) as Bulstrode
 * Mavis as Pinknose
 * Grampus (from TUGS) as The Spiteful Breakvan
 * D199 (from RWS) as Rocky
 * Percy as James
 * Isobella as Elizabeth
 * Owen (from Theodore Tugboat) as Cranky
 * Skarloey as Sixteen (from RWS)
 * Bowser (from Mario) as Sir Topham Hatt
 * Tiger Moth as Harold
 * Constance (from Theodore Tugboat) as Madge
 * Freddie as Mallard (from RWS)
 * Lord Stinker (from TUGS) as Johnny Cuba (from TUGS)
 * Bulgy as Jack
 * Toad as Smudger