Luke is an Irish narrow gauge tank engine who works on the Skarloey Railway at the Blue Mountain Quarry.


Luke arrived on Sodor from Ireland. It had always been his dream to come to Sodor and he was very excited to work there. He arrived on Sodor alongside Victor, who at the time was painted yellow and did not speak English. When the ship docked, Luke was so eager to get to work that he begged the workmen to take him off the ship first. However, as he was being unloaded, he accidently bumped into Victor, knocking him off the ship and into the sea. Luke was then taken to the Sodor Steamworks to be repaired.

Victor would eventually be recovered and given a permanent home at the Steamworks, but Luke was not aware of this. He believed that Victor had been sent to the Sodor Ironworks to be smelted and blamed himself for the accident due to his impatience. When he arrived at the Blue Mountain Quarry, he told the narrow gauge engines about what had happened. The engines feared that, if the Sir Topham Hatt and Mr. Percival found out about what Luke had done, they would send him away. As a result, they allowed Luke to stay at the quarry, where he remained hidden from view.

This all changed one day when Thomas was called in to replace Paxton at the quarry after the diesel was in need of repairs. He encountered Luke a few times during his second day there, although the other engines denied knowing anything about him. Eventually, Skarloey relented and told Thomas about Luke, although he refused to explain what Luke had done, and warned Thomas not to tell anyone.

Luke eventually warmed up to Thomas after he saved Skarloey from an accident with Rocky. The two quickly became friends, and Luke finally admitted to Thomas what he had done. Determined to help Luke, Thomas decided to search for the "yellow engine" in Luke's story. He eventually learnt the engine's identity as Victor, and that the chains that had held him to the ship had broken at the time.

Thomas rushed to tell Luke about what he had learnt, but the narrow gauge engines assumed he had told Victor about Luke and that he had broken his promise. As they retreated to the higher levels of the quarry, Thomas desperately tried to follow them, even travelling on the narrow-gauge lines, which resulted in him nearly falling off a cliff. Luke managed to save Thomas and rekindled his friendship, before learning moments later from Victor the true events of the incident. Realizing that it was only an accident and that Victor had not been scrapped, Luke finally felt happy and was accepted into the narrow gauge fleet by the Mr. Percival.

He once befriended a young deer which was found at the Blue Mountain Quarry. Knowing that the deer did not belong at the quarry, he released it back into the wild at Ulfstead Castle. He has also traded jobs with Millie at Ulfstead Castle.

One Christmas, he had to pull a flatbed with a Christmas tree, but got stuck on a hill and had used up all of his sand. Duncan, who was travelling behind, was annoyed and when some of the tree hit his face, he complained to Luke. However, when Duncan realised that he had hurt Luke's feelings, he decided to help Luke by pushing him up the hill.

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