Percy

Percy is a green saddle tank engine who was brought to Sodor to help run the railway during the big engines' strike. He is one of the youngest engines on the North Western Railway and is quite cheeky, often getting himself into trouble with his attempts to play tricks on the other engines. Percy's favorite job is pulling the Mail, and he works on Thomas's Branch Line as a goods engine

Basis
Percy is an 0-4-0 saddle tank believed to have been built by the Avonside Engine Company of Bristol, but prior to being purchased second or third hand by Sir Topham Hatt he acquired components from Hunslet of Leeds and other builders.

In the Story Library Book called The Fat Controller, a maroon tank engine seen in the workshop vaguely resembled Percy, so it is likely that the engine is also based on this design.

Livery
Percy is painted in NWR apple green with red and yellow lining. His number is painted on the sides of his cab in yellow with red lining and the lining around his cab windows is yellow.

In the Railway Series, he carries two builder's plates on the sides of his cab

Behind The scenes
a close up model was made for Edward to be used for scenes where he had to interact with model people

Percy shares his cab with duck