Ivo Hugh/Behind the Scenes

The Railway Series
Ivo Hugh is a fictional narrow gauge tank locomotive working on the Skarloey Railway. He was introduced in the Railway Series book, D New Little Engine, which was published in 1996.

According to Sodor: Reading Between the Lines, even though he only appeared in a Christopher Awdry book, he was actually created by the Rev. W. Awdry, who "never had time to write the story".

Ivo Hugh is based on the Talyllyn Railway No.7 locomotive, Tom Rolt. The locomotive has also been used by the Talyllyn Railway to represent Ivo Hugh in real life.

Ivo Hugh's name is a reference to his basis' name, Tom Rolt, having the same amount of letters and words. Furthermore, the character was named after the fictional former Chief Mechanical Engineer of the Skarloey Railway, Mr. Ivo Hugh. This is a reference to Tom Rolt being named after the writer and engineer L.T.C. Rolt who served as chairman of the Talyllyn Railway.

Thomas & Friends
Ivo Hugh was not introduced in the television series.

In 2005, "Fearless" Freddie, an old grey 2-6-2 warhorse tank engine was introduced for Season 10. Freddie replaces Ivo Hugh as the No.7 narrow gauge engine belonging to the Skarloey Railway.