Thomas &; Frank Foley, the copyright owner of Friends and the general manager of HIT Entertainment Co., Ltd. in Asia, said that Thomas first appeared in 1945 in the story Railway Series written by Rife Audrey, a British priest. This personified blue steam train and his train friends with different personalities live on an island called "Duoduo", taking risks and growing up together.

Character introduction:

Thomas is a small locomotive with little knowledge and quick temper. He often does things beyond his authority, leaving himself scarred. However, after his sadness, Thomas will soon be happy to run around the yard and his special line. Thomas is very proud of the special railway line named after himself.

James is a medium-sized motorcycle. His six driving wheels are neither as big as Gordon's nor as small as Thomas's. He has a bright red coat and a brass dome, which often feels like a dazzling locomotive. This idea occasionally makes him have unrealistic fantasies about his work, which will undoubtedly bring him trouble. James is a duplex locomotive. He can pull both passenger cars and trucks.