Long ago, he shared a secret only with Tasha, his childhood friend: Lady. One day, he went to the Island of Sodor, where he drew a painting of Lady, which Stacy found years later. He took Lady there. This was a mistake, however, as Diesel 10 came to Sodor, much to the fear of all the other engines, and threatened to destroy her. He made Lady go too fast and she used up all her coal and then crashed her. Burnett was lucky to bring her back to Muffle Mountain. He did his best to fix her up, but couldn't make her steam, nor could he make up for the mistake he made. And he had tried all the coals in the valley. He later married Tasha, but couldn't keep his promise to Tasha about taking her on a trip on Lady. She later died. This saddened Burnett so much that he refused to leave the other side of the mountain, not even to see his granddaughter, Lily. He is good friends with Patch, who often visits him. Years later, Lily went to see him, but went missing, one day. Burnett had to find the secret to Lady more than ever and save the Magic Railroad. When they found her, she brought her special coal from Sodor, the only coal that can make her steam. They had finally restored the railroad and returned to Sodor. This was another mistake, as a few days ago, Diesel 10 had returned to the island to find Lady. But Burnett would not let her down again! And, with the help of Thomas, they stopped Diesel 10.
- Burnett was voiced by Shinji Ogawa in the Japanese dub of Thomas and the Magic Railroad and by Tzvika Shwartzberg in the Hebrew dub.
- In the original script of Thomas and the Magic Railroad, he had an unborn grandchild.