Percy

Percy is a cheeky green saddle tank engine who was brought to Sodor to help run the railway during the big engines' strike. His favourite job is to deliver the Mail Train. He works on Thomas' Branch Line as a goods engine.

Personality
Percy is a rather cheeky, but kind engine, who normally behaves well, except when he is getting into mishaps from being over eager. He loves teasing the others, especially the bigger engines, such as Gordon and James, but is always brought down to earth in due course by anyone who gives him the moral to learn, especially the Fat Controller. Sometimes, he can also be somewhat timid. Percy is also incredibly accident-prone and has many accidents, sometimes due to his own silliness or his tricks backfiring.

Although their friendship has been turbulent at times, Thomas is generally portrayed as Percy's best friend and is also good friends with Toby as well. While he has a small rivalry with Harold, stemming from their race, they are always willing to help each other when in trouble.

Percy can also be seen as an easy target for teasing by the big engines, especially whenever he has an accident or when he is afraid of something. He also has held a grudge from them about their tricking him into misinterpreting a signal, but silenced this with some help from Duck. This shows that, when nonsense goes too far, Percy will not stand for it and seek help to settle the matter for good, even if he faces a reprimanding from Sir Topham Hatt for it.

Basis
Percy is an 0-4-0 saddle tank believed to have been built originally 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. A similar locomotive that Percy resembles, No. 1340 Trojan, is preserved at the Didcot Railway Centre.

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.

Trivia

 * Percy's appearance has changed since the third episode of the first season.