Frankie is a diesel engine who works at the Steelworks.
On his trip to the Mainland, Thomas discovers a strange place called the Steelworks, where he befriends two mysterious engines named Frankie and Hurricane. However, he realizes they aren't quite what they seem. Frankie and Hurricane soon put Thomas to work and prevent him from leaving the Steelworks.
Frankie is based on a Hudswell Clarke 0-6-0 diesel shunter which worked at the Manchester Ship Canal. No. 4002 Arundel Castle, affectionately known as "Billy", is preserved in working order by the East Lancashire Railway Diesel Group. Sister locomotive No. 4001 Alnwick Castle is also preserved as astatic non-operational exhibit at the Winfields Store site at Rising Bridge.
Frankie is painted indigo and ocean blue with gold lining and steam pipes. She has red and gold nameplates on either sides and "M.S.C." written on top of her face. Her number is written in gold on her front bufferbeam.
- Thomas and Friends Adventures (coming soon)