Stephen Hatt

Stephen Topham Hatt (born 1941) is Sir Topham and Lady Hatt's grandson and the older brother of Bridget. In the Railway Series, he took over his father's role as controller of the North Western Railway in 1984 and became Sir Topham Hatt III in 1997. In the magazine stories, he and Bridget have a friend named Marcus.

Appearances
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Railway Series

 * Toby the Tram Engine

He later appeared, as the Fat Controller, in the following books:
 * James and the Diesel Engines
 * More About Thomas the Tank Engine
 * Gordon the High-Speed Engine
 * Toby, Trucks and Trouble
 * Thomas and the Twins
 * Thomas and the Great Railway Show
 * Thomas Comes Home
 * Henry and the Express
 * Wilbert the Forest Engine
 * Thomas and the Fat Controller's Engines
 * Thomas and Victoria

It's very likely that he will appear in the 42nd Railway Series book.

Television series

 * Season 1 - Thomas and Gordon (cameo) and Toby and the Stout Gentleman
 * Season 2 - Old Iron (cameo) and Wrong Road (cameo)
 * Season 3 - Percy's Promise (cameo), Time for Trouble (cameo), Thomas gets Bumped (cameo)
 * Season 4 - Peter Sam and the Refreshment Lady (cameo), Steamroller (cameo), Bowled Out (cameo), and Bull's Eyes (cameo)
 * Season 5 - A Better View for Gordon (cameo), Bye George! (cameo), Baa!, Toby's Discovery, Something in the Air (cameo), and Sir Topham Hatt's Holiday
 * Season 6 - Harvey to the Rescue (cameo), No Sleep for Cranky (cameo), James and the Red Balloon (cameo), Thomas, Percy and the Squeak (cameo), and Edward the Very Useful Engine
 * Season 7 - Snow Engine, Rheneas and the Roller Coaster (cameo), Harold and the Flying Horse (cameo), and Three Cheers for Thomas (cameo)
 * Season 8 - Thomas and the Tuba (cameo), Henry and the Wishing Tree (cameo), Thomas Saves the Day (cameo), Thomas and the Firework Display (cameo), Squeak, Rattle and Roll (cameo), Thomas and the Circus (cameo), and Chickens to School (cameo)
 * Season 9 - Thomas and the Birthday Picnic (cameo) and Thomas Tries His Best (cameo)
 * Season 10 - Follow that Flour (cameo), Percy and the Funfair (cameo), Seeing the Sights (cameo), Which Way Now?, Sticky Toffee Thomas (cameo), and Thomas and the Treasure (cameo)
 * Season 11 - Thomas and the Storyteller (cameo), Edward and the Mail (cameo), Toby's Triumph (cameo), Thomas and the Runaway Car (cameo), Thomas and the Big Bang (cameo), and Percy and the Left Luggage (cameo)
 * Season 13 - Thomas and the Runaway Kite
 * Season 14 - Diesel's Special Delivery
 * Season 15 - Wonky Whistle (cameo)

Specials:
 * The Great Discovery (cameo)

Magazine stories
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 * 1998 - The Carnival! and Toby and the Stout Gentleman! (not named; does not speak)
 * 2002 - Toby to the Rescue!
 * 2008 - Giant Puffer and A Spring Clean! (does not speak)
 * 2010 - Piggy-in-the-middle!

Voice actors

 * Matt Wilkinson (UK; thirteenth season onwards)
 * William Hope (US; thirteenth season onwards)

Trivia

 * In the magazine story The Hallowe'en Special, it is said that Stephen and Bridget live on the Mainland and come to stay with Lady and Sir Topham Hatt every so often.