Lady Hatt (UK; thirteenth series onwards - US; seventeenth and twenty-first series)
Stephen Hatt (UK; fourteenth series onwards - US; nineteenth series onwards)
Bridget Hatt (UK; thirteenth series onwards - US; nineteenth series onwards)
The Duchess of Boxford (UK; Hero of the Rails onwards - US; seventeenth series only)
The Teacher (UK; thirteenth series - US; eighteenth series onwards)
The Blond-haired Boy (UK; fifteenth series onwards, excluding the nineteenth series - US; nineteenth and twenty-first series)
The Ginger-haired Boy
The Shouting Little Boy
The Lady with the Big Hat
The Station Speaker (eighteenth series onwards)
Some Passengers (Spencer's VIP, The Perfect Gift, Lost Property, Henry Spots Trouble, Mike's Whistle, Useful Railway, Springtime for Diesel and Runaway Engine)
Some Children (The Adventure Begins, Lost Property, Slow Stephen, Sodor's Legend of the Lost Treasure, Runaway Engine, P.A. Problems and Daisy's Perfect Christmas)
Albert's Wife (nineteenth series onwards)
The Female Puppet Show Entertainer
The Lady in the Yellow Dress and Hat (P.A. Problems)