Neville is a steam engine, whose square body may cause others to look at him as having diesel-like qualities. Upon his arrival, after being seen with 'Arry and Bert, who were actually teasing him, Neville was the topic of a rumour regarding him being friends with the diesels and being horrid to steam engines, despite his jolly greetings to the engines. Luckily, the rumours were quickly seen for what they were and Neville's true personality was allowed to shine through. Neville is gentlemanly, highly enthusiastic, and kind, if a little naive. Neville never holds a grudge, but can be easily hurt by unkind comments or not being accepted by others who judge him only by his appearance. Otherwise, he is bubbly, ready to pull together, and happy to make new friends. Neville is similar to Thomas, as he wants to be really useful.
- It is currently unknown when Neville will appear.
- Neville and Flying Scotsman share a whistle sound.