Percy


 * "That's the one. If I choose you, will you work hard?" "Oh Sir, yes, Sir."

"That's a good engine. I'll call you Percy."
 * — Sir Topham Hatt and Percy, Trouble in the Shed, first season

Percy is a cheeky saddletank who was brought to Sodor to help run the railway during the big engines' strike. He works on Thomas' Branch Line as a goods engine.

Percy in Equestria Girls at the Magic Gold Dust, Percy Thinks Edward He's a Brave Engine in the Whole World.

Percy in Thomas and the Magic Railroad 2, Percy and Toby Pushed Splatter and Dodge into the Scrapshed.