Barry

Barry - named after Barry Island, the home of the scrapyard in South Wales where he was rescued from - was a potential character for the Railway Series, to first appear in Barry the Rescue Engine, which was initially thought to be the thirty-ninth volume of the Railway Series as a follow-up from Wilbert the Forest Engine. However, the book was shunted aside for a fiftieth anniversary volume, Thomas and the Fat Controller's Engines.

It has since been revealed by Christopher Awdry that the book had been created well before, and the engine similar to Wilbert was a different one altogether. Hopefully, with the return of the Railway Series to print, Barry will finally receive his own book.

Apparently, Barry will be partnered with Donald and Douglas to help them on the branchlines.

Basis
According to the newly-updated The Railway Series: A Brief History page on the Sodor Island Fansite, Barry is a BR Standard Class 2. Whether Barry is a 2MT 2-6-0 of the 78000 series or a 2MT 2-6-2T of the 84000 series is debatable.