'Arry and Bert

Arry and Bert are two gruff Diesel twins who work for the Sodor Ironworks at the smelters. As of the twelfth season, they appear to be based at the Sodor Slate Quarry.

Trivia

 * Arry and Bert will both become the enemies of Winnie the Pooh and Twilight Sparkle in Pooh's Adventures of Thomas and Friends: CGI TV Series.