"The Fat Controller"
Sir Topham Hatt, nicknamed "The Fat Controller" in the UK series (previously known as "The Fat Director"), is the manager of the North Western Railway.
In his youth, he was a Boy Scout. Prior to him becoming Controller of the North Western Railway, Sir Bertram Topham Hatt owned a Sentinel steam lorry named Elizabeth, who notes that he was not the best driver. When he was a young man, Edward always took him aboard an old coach on his birthday. He also built the Coffee Pots some time prior to Thomas arriving on Sodor. Sir Topham later received his knighthood for his service to the railway industry. He was also the controller of the Skarloey Railway, until Mr. Percival was hired to help him manage the ever-increasing size of his railway industry. Prior to Blue Mountain Mystery, he bought a track inspection car named Winston, who is often used as a private transportation vehicle on the railway.
Sir Topham Hatt married Lady Hatt and is the grandfather of Stephen, Kira, Brady, and Bridget Hatt. He has a twin brother, Sir Lowham Hatt and his mother is Dowager Hatt. He is also the father of Richard Hatt, who took over the NWR after Sir Topham retired.
Sir Topham Hatt is firm but fair. He can be strict, but also shows a fatherly side to the engines. He is quite a strong character and will remind the engines that he is in charge when they start to rebel against his authority. He does not stand bullying and even though he is usually serious, he does enjoy a good laugh. Despite his kindness and fairness, however, there are times where he berates the engines for situations beyond their control.
Sir Topham Hatt is a short, stout gentleman. He usually wears morning dress, consisting of a black tailcoat with grey trousers, a cream, yellow or grey waistcoat, a black tie and a black top hat. He is most often depicted as having thinning grey hair and blue eyes.