He is an island engine along with Percy.
Thomas is a kind train who will help anyone in need. His goal is to be a wide open railroad going engine to travel to other islands. But before he must master the job of an island engine. He and his friends get into trouble but always end a good day or night. He is friends with Owan and Tex after Thomas and the Oil Deseil. He is also friends with Shelburne,Bobby or any type of small car.