Logan is a strong, shunting steam engine who looks like a diesel exclusive to the Sodor Story Collection. He is included with the Logan and the Big Blue Engines Set and the Logan and the Big Blue Engines Book Pack. Logan is one of the only engines of this size, the others being Lady, Philip, Millie, Scruff, and Neil.
- Logan (Logan and the Big Blue Engines Book Pack)
- Dirty Logan (Logan and the Big Blue Engines Set)
- Logan is the only Sodor Story Collection character to have a different variant in his book pack than in his set.
- Logan's blue paint is significantly darker on his promotional CGI render and Wooden Railway model than it is in his book's illustrations.