Percy the Small Engine (seasons 1-14, 17-24)

Percy The Small Green Engine is the tritagonist of the Thomas and Friends series. He is a small green engine, and one of the youngest engines on the island of sodor.

Why He Rocks
1. He is a great best friend to Thomas.

2. His crash in Percy's Chocolate Crunch is absolutely hilarious.

3. He is a favorite of the main cast, fans, and the Franchise altogether.

4. He along with Toby started the Ffarquar trio.

5. His green color suits him well.

6. Thomas and Friends wouldn't be the same without him.

Bad Qualities

 * 1) Lost his original personality to flanderization during Seasons 15-16 and the infamous "Day of the Diesels" as he was turned to a idiot, dimwit and a crybaby who obsesses over Thomas' attention and made a big deal over Thomas befriending Belle and Flynn in said special, yes Thomas may have ignored Percy, but that gives Percy no reason to behave like that. "Percy and the Monster of Brendam", one of his worst episodes, made him painfully dumb where he was asking to be scared by some so called "monster of brendam". His downfall was short lived like the Gene Deitch era of Tom and Jerry from 1961-1962.
 * 2) The infamous episode where Percy's attempts at befriending animals because he wants to play whilst he might have work to do on the railway would be something very against his character as Percy usually likes animals, but he would never obsess over attention to animals.

Trivia

 * One of Percy's models is currently on display in Japan at the Hara Model Railway Museum (previously on display at Nitrogen Studios), along with his large-scale model used for the spin-off series, The Pack (previously on display at Thomas Town). One of Percy's original face masks is also in possession of Twitter user ThomasTankMerch.
 * Percy is the only engine who is known to have been named by the Fat Controller/Sir Topham Hatt.
 * In the French narration of the Classic Series, Percy is called "Pierre", and in the Greek narration of the Classic Series, Percy is called "Jerry". From the thirteenth series onwards, Percy has been referred to with his original name.
 * Percy has been shown to be quite popular among several people who worked on the series, according to Abi Grant on her website, Percy is her favourite/favorite character, Britt Allcroft also stated he was her favourite/favorite character due to him being green and cheeky, Percy is also Mark Moraghan's favourite/favorite character, alongside Cranky.
 * Percy is the first character other than Thomas to be the protagonist in a special, with that special being Day of the Diesels, which he would later do again in Tale of the Brave.
 * In "Thomas and the Rumors", it is stated that Percy had a branch line, although it may have either been a plot hole, or had been mistaken for Thomas' Branch Line.
 * Percy was featured on the 1986 single cover along with Rheneas of Oh L'amour, a song by English synthpop duo Erasure.