Percy

Percy is a little green saddle tank engine who was brought to Sodor to help run the railway during the big engines' strike. He is the tritagonist of the SC Shorts.

Biography on YouTube
Percy first appeared on Sammy Clark's YouTube channel in the video, "Thomas and Friends: Culdee and the Mountain Bridge", and his first appearance in the SC Shorts was in the second episode, "Snowy Sodor".

Biography in the SC Shorts
Percy first appeared in the second episode, "Snowy Sodor". In the episode, he got stuck in the snow and tried to get help from Thomas. But Thomas refused to come to his aid, twice. He then later on warned Thomas about there being someone stuck on his line, which later turned out to be 451.

While James was working on Thomas' Branch Line while he was away, Percy had accidentally crashed into James, Annie, and Clarabel. When he crashed into them, a passenger's foot got caught outside of one of Annie's windows and Percy had accidentally eaten it. Despite this, Sir Topham Hatt wasn't cross with Percy, but instead he was cross with James. This later caused James to take out his anger on Percy by throwing him in a trash bin.

After seeing how tired Percy was with work, Thomas volunteered to take Percy's mail train so he could go and get some rest. However, due to Thomas not taking the mail train in years, he forgot some of the steps to delivering the mail properly and ended up leaving a mail car in the middle of the line causing a big accident down by the Docks. This incident then caused Percy to get scolded by Sir Topham Hatt despite not causing the accident in the first place. The two engines soon got an idea from Duck to time travel in the past to prevent the accident from ever happening. And after Thomas screwed up the future twice (and each got worst every time), Duck finally stepped in and saved the future by delivering the mail cars on time and by taking them back to the Shunting Yards.

Sometime later after working with each-other, Duck secretly kidnapped Toby and started to prepare his and his army's attack on Sodor. When Thomas and Percy found out that Toby was missing they searched high and low on Sodor to try and find him, but ended up getting zero results. And sometime before questioning Diesel about where Toby might be, Percy was secretly kidnapped too by Duck.

When Thomas and his army came over to save Toby and stop the Duck Army, they discovered that Duck had kidnapped both Percy, Annie, and Clarabel and had somehow turn them all evil. Luckily by the end of the day, the Thomas Army were able to revert the three back to normal, despite not giving Thomas a proper explanation on how they accomplished it.

After Diesel had taken charge of the Dieselworks, he had a plan to show Sir Topham Hatt how revolutionary diesels were by purposely having the steam engines have accidents and have diesel engines to do their work while they're being repaired. Percy was one of these victims and ended up getting pushed into the sea by some troublesome trucks. Dart was later given the task of doing Percy's work while he was being repaired.

Sometime later, Sir Topham Hatt had to leave the island on urgent business and left Diesel in charge of the railway. And after finding out Diesel's devious plan to take over Sodor, Spencer and Flying Scotsman assembled Sodor's Finest, which consisted of: Flying Scotsman (leader), Spencer, Thomas, James, Percy, Duck, Paxton, Philip, and Diesel 10.

After escaping a mine full of dynamite, James got trapped inside. But when Percy and the other engines came back to the mines to save him, they noticed that someone had beaten them to get James out of there. They soon learnt from Spencer that James was apart of Diesel's plan. With this in mind, the engines went down to the Shunting Yards to go and save James from being cemented. Fortunately, they saved James just in time, but unfortunately, Diesel was getting away with the last of the coal left on Sodor. Percy decided to stay behind to help out Philip and James, and also saying how he would only slow Thomas down. Thomas then made a remark to him by calling Percy his 'sidekick'.

After the events of "Heroes Of The Rails", Percy and Thomas later encountered the Logging Locos at the Sodor Search and Rescue Centre. In shock of their presence, Percy fainted without a word.

Personality
Percy is a rather misfortunate, but kind engine. He normally behaves well, yet he also gets himself in trouble by jumping into situations without adequately thinking them through first. He can also be somewhat timid.

Percy is incredibly accident-prone and has many accidents, sometimes due to his own silliness or naiveness. His silliest accident (as well as most gruesome) was in "James' Day Out", when he crashed into James, Annie, and Clarabel and causing one of the passengers to lose their foot due to him accidently eating it. Despite this, he always tries to do his best, learns from his mistakes and get his jobs done, a loyalty which Sir Topham Hatt has praised him for on many occasions.

Although their relationship has been turbulent at times, Thomas is Percy’s best friend. He is also good friends with Toby. 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 some of the engines as he often gets the blame pinned on him whenever someone else makes a mistake, causing Percy to face the wrath of Sir Topham Hatt.

Trivia

 * Despite being Thomas' best friend, James has more appearances in the SC Shorts than Percy.
 * Its been revealed in a few episodes that Percy is gay because he considers Thomas to be his boyfriend.
 * At some point during Percy's built, a toolbox was dropped on his head which caused him to develop a severe case of short term memory loss and terminal 7.
 * He appears in the third most amount of SC Shorts.
 * Percy has gone through a few aesthetic changes in the SC Shorts.
 * In "The One Year Anniversary Crash Supercut", his Learning Curve Wooden Railway Chocolate Crunch model was replaced with a 2019 Repainted Wood Percy model.
 * In "Thomas Through Time", he gained painted handrails across his saddle tank and on either side of his cab entrances, mimicking his redesign in Series 23 of the official Thomas & Friends series.