Narrator / Mr. Bubbles (voice)

Thomas / Percy (voice)

Gordon / Sir Topham Hatt / Kevin / Dash (voice)

Lady Hatt / Emily / Children (voice)

Dowager Hatt (voice)

Victor (voice)

Bertie (voice)

Farmer McColl / Maithwaite Stationmaster / Steamworks Worker / Farmhands / Bash (voice)

Spencer / Charlie / Ferdinand (voice)

Hiro (voice)

Mr. Perkins