Rainbow Sun

Billy Twofeathers's engine is named the Rainbow Sun. In Thomas and the Magic Railroad, it was portrayed by the Strasburg Rail Road's #475, built in 1906 and formerly on the roster of the Norfolk and Western Railroad. It is one of only few N&W 4-8-0 Mastodon locomotives preserved, and the only one of its class operating. #475 is still operating today as one of the railroad's main locomotives. This engine was also featured in A Wonderful American Journey with Thomas and Connie, though not as the Rainbow Sun.

Trivia

 * The whistle sound used for the Rainbow Sun is later used for both Rocky on Edward Strikes Out and Victor on the Guess Who? Puzzles.