Diesels The Adventure Begins Sodor's Legend of the Lost Treasure The Great Race Big World! Big Adventures! She is the only household member to originate in the TV series, never having appeared in the Railway Series books. Grandchildren: Stephen and Bridget They both have appeared together in: Grandson: Stephen Hatt Stephen Topham Hatt lives on the Island of Sodor, and regularly has outings and holidays with his grandparents and sister. Stephen loves trains, and was excited when he first met Toby the Tram Engine. Stephen also has a bit of knowledge about the Island, of which is the reason they discovered the Old Castle and the mine (in which Bertram was found). In the Railway Series, Stephen ultimately took the railway over and is the current Fat Controller. In the television series, he has always remained a child. Voices: Matt Wilkinson (UK; Season 13 only) Teresa Gallagher (UK; Season 14 onwards / US; Season 19 onwards) William Hope (US; Season 13 and 14 only) He has appeared in: Granddaughter: Bridget Hatt Bridget Amanda Hatt lives on Sodor, and regularly goes for outings and holidays with her grandparents and brother. On one occasion they went to Toby's old line, where she thought Toby was an electric tram and was reprimanded by her brother for offending him. Her parents (mentioned only in the book Sodor: Reading Between the Lines) are Charles and Amanda Hatt. Voices: Teresa Gallagher (UK; Season 14 onwards / US; Season 19 onwards) Jules de Jongh (US; Season 13 and 14 only) She has appeared in: Twin brother: Lowham Hatt Sir Lowham Hatt is the jolly twin brother of Sir Topham Hatt, the son of Dowager Hatt, the great-uncle of Stephen and Bridget Hatt, and the brother-in-law of Lady Hatt. Lowham is mischievous and enjoys playing with the children. He seems to know little or nothing about railways. He played hide-and-seek with the children and then went into a signal box and pulled the lever, switching Gordon to the branchline. He dresses exactly like Sir Topham but has a moustache. It is unknown how and why he got his knighthood. He only appears in the series 13 episode, "Double Trouble". Voices: Keith Wickham (UK) Kerry Shale (US) The Hatts' Butler Sir Topham Hatt has a butler who is featured in The Railway Series and the Thomas & Friends TV series. He has appeared in only three stories - "Thomas