In the Railway Series, Stephen assumed his father's role as Controller of the North Western Railway in 1984, and became Sir Topham Hatt III in 1997. In Thomas & Friends, Stephen has remained a child since his first appearance.
Personality and Traits
As an adult, Sir Stephen Topham Hatt is portrayed as a short, stout gentleman. He wears a black jacket over a cream waistcoat, a white shirt, grey trousers, a pair of black shoes, a black tie and a top hat. In his first appearance as the Fat Controller, Stephen had a brown waistcoat, black hair and a handlebar moustache.
In the television series, Stephen has always been portrayed as a small boy with short brown hair. His normal attire consists of a green jacket over a white shirt, a black tie, brown shorts and a pair of black shoes. Starting with the third season, Stephen wore a green sweater instead of his jacket and tie, but went back to wearing his first season attire in the seventeenth season.
- Stephen Hatt is the first of the Fat Controllers to sport facial hair; he was seen with a moustache in Really Useful Engines.