A magenta streamlined tender engine from the Mainland. She pulls passenger trains between Ulfstead Castle and Vicarstown. An air ambulance who works with Doctor Claire. She befriends Thomas during his time working in Australia. She is the same type of plane as Emerson.

A yellow mobile crane who works at the Sodor Steamworks alongside Victor. Kevin's catchphrase is "It was a slip of the hook!" Series 24 - Emily's Best Friend ( cameo), James the Super Engine ( cameo), A New Arrival, Sonny's Second Chance, Kenji on the Rails Again ( cameo) and Thomas' Animal Friends Series 11 - Thomas and the Storyteller ( faceless, cameo), Gordon and the Engineer ( faceless, cameo), Smoke and Mirrors ( faceless, cameo), Thomas Sets Sail ( faceless, cameo), Hide and Peep ( faceless, cameo), Thomas and the Runaway Car ( faceless, cameo), Thomas in Trouble ( faceless, cameo) and Percy and the Left Luggage ( faceless, cameo) According to an SiF interview with Sam Wilkinson, Reg is a hybrid design of various diesel-powered rail-based cranes.A "coffee-pot" engine that used to work on Thomas' branch line before being abandoned. He was restored and now works alongside Stephen and Millie at Ulfstead Castle. Kelly is good at heart and gets along with everyone. He is especially good friends with Isobella. He is seen by many as the team's leader, and is usually given the most dangerous work to do. He will not be rushed and understands that work of this kind takes extreme care. Kelly used to have a slight fear of strong winds, but he conquered that fear when he rescued Isobella. An orange caterpillar tractor who usually works on a farm near Thomas' branch line, and later McColl Farm. A green 4-6-0 mixed-traffic tender engine who works on the North Western Railway. He originally had a smaller firebox and needed special Welsh coal to operate properly. Following his accident when pulling the Flying Kipper, Henry underwent an extensive rebuild, giving him a new shape and better performance.

An orange 2-6-2 T engine from Kenya who befriended and accompanied Thomas on his journey around the world. She is now a permanent resident of the North Western Railway and a member of the Steam Team. She often helps out at the Sodor Animal Park. Series 7 - Bill, Ben and Fergus ( faceless, cameo), Edward's Brass Band ( faceless, not named; does not speak), What's the Matter with Henry? ( faceless, cameo), The Spotless Record ( faceless, cameo), Bad Day at Castle Loch ( faceless, cameo), Salty's Stormy Tale ( faceless, cameo), Something Fishy ( faceless, cameo), Peace and Quiet ( faceless, cameo) and Not So Hasty Puddings ( faceless, cameo)A little 4w DM diesel engine who carries out maintenance work and odd jobs on the Skarloey Railway. A traction engine who resides at the Wellsworth Vicarage Orchard. He was due to be broken up before he was saved by Vicar of Wellsworth. Series 10 - Help From Your Friends ( cameo), Which Load for Rosie? ( cameo), What Makes Salty Happiest? ( cameo) and What is Henry Thinking? A small Italian T engine who once participated in the Shunting Challenge in the Great Railway Show.