Oliver

Oliver is a Great Western tank engine who was saved from scrap by Douglas. His daring escape made him popular with the other engines, which perhaps made him a little overconfident. He now works on the Little Western with Duck. He has two Great Western autocoaches and a brake van named Toad.Despite his heroism and daring feats of escape, Oliver is an engine who is willing to admit every day is a learning curve. When he was still new to Sodor, he let the other engines' responses to his courage, resource and sagacity from his amazing recounts of daring escapes and adventures get to his smokebox and he became conceited. However, when the Troublesome Trucks pushed him into the turntable well, he grew into a much humbler, settled engine and was far warier of trucks. But later, with some help from his brake van Toad, he did gain much respect and authority among the trucks when he showed his strength with the ringleader of the trucks, S.C. Ruffey, a little more than he had perhaps been intending. Oliver still has gumption but is now a more obedient, sensible engine. He feels his responsibility on the railway deeply, is ever thankful for being aided in his escape from scrap by Douglas and is a trustworthy, tenacious, plucky engine. However, he can still be occasionally boastful or temperamental; despite this setback, Oliver is still one of the more really useful and well-behaved engines on Sodor.

Oliver's involvement in the series:
Oliver and Toad were escaping from scrap when Douglas found, saved and brought them to the North Western Railway. The other engines were impressed by his adventures and the attention soon went to Oliver's smokebox. He was so conceited that he ignored Duck and Donald's advice about trucks and several pushed him into a turntable well. Upon his return from the Works, Oliver regained his respect after pulling the ringleader of the trucks, S.C. Ruffey, apart.

Since then, (with the exception of running Thomas' Branch Line during the engines' trip to England) Oliver has worked at Callan Yard, also known as Oliver's Yard and the trucks have feared him, considering him to be dangerous and preferring Percy. Oliver missed the long runs and wanted to do more than simply push trucks onto the turntable, but he remained tight-lipped about his problem and grew unhappy as a result. He ended up roughly biffing the trucks into the turntable well, damaging it. Sir Topham Hatt transferred him to the mail train so the night air can clear his smokebox, but Oliver ended up getting lost, discovering an abandoned house (which was later turned into a tea-house) in the process. When Harold found him, Oliver concluded that being found is much nicer than being lost. His brake van Toad started feeling a similar problem when he was glum about always going backwards. Oliver tried to cheer him up by reminding him of his usefulness. When the trucks broke away from Oliver on the hill, taking Toad with them, Oliver determinedly chased after the runaway through Wellsworth and Crosby and all the way to the Old Stone Bridge. Oliver could not help teasing Toad when all was said and done and assured him no harm was done in case of Toad causing Oliver an embarrassment.

He once broke down on the Intersection and was saved by Emily when he was about to be hit by Thomas. He also complained about the snow, but later crashed into a children's snowman in the village, in which he had to spend the night in the snowman's body.