Rosie

Rosie is a lively little tank engine who idolises Thomas, which sometimes bothers him. She works as both a shunting engine and a mixed traffic engine. She used to work mainly at the Knapford Shunting Yards, but is now based at Vicarstown.

Biography
Rosie began idolising Thomas to the point of hero-worship and imitation. Though this is said to be the most sincere form of flattery, it only served to irritate Thomas whilst he was trying to deliver a special birthday post train to Alice at High Farm. He even started to try and avoid her, but after Thomas had an accident in the course of delivering this train, Rosie helped him and he started to respect her.

Rosie was later called to help Thomas shunt trucks until Hectorfrightened her away.

Rosie was charged with acting as a back-engine to Emily with the funfair special. Wanting to take the train herself and thinking she was doing Emily a favour, Rosie succeeded only in creating confusion and delay on a grand scale, but eventually set things right.

Rosie rescued Thomas when his fire went out after playing a game of "Splish, Splash, Splosh". She later let Diesel take her train of flowers which was headed for market.

One day Rosie had a cracked wheel, so Thomas and Butchbrought her a new one.

On Sodor Surprise Day, Thomas bumped some coal trucks to surprise Gordon, but ended up surprising her instead. She was later cleaned up with Whiff at the washdown and joined Gordon and Thomas at Callan Castle to see Harold decked out in bright lights to make Gordon laugh.

Sometime after she was repainted into her red livery, Jameschallenged her to a race. When Rosie realised that there was something wrong with James' brakes, she warned him to go to the Steamworks to have them checked before they got worse. James did not follow her advice and as a result, when he sped down Gordon's Hill, his brakes would not work and he went on a runaway until he crashed into the wall at the end of Tidmouth Sheds.

Soon after, James went to the Vicarstown Goods Yard, looking for Henry's train to take to the Mainland. Rosie told him that she knew they were important and that was why Thomas came to take them earlier.

During Valentine's Day, Diesel bumped her just as Cranky was loading her flatbed with a crate of roses, which ended up crashing on the tracks. Bill and Ben later saw Thomas telling off Diesel, causing the twins to think they were attracted to each other, much to their embarrassment. A bit of teasing and a meet-up with Thomas at the washdown caused her to avoid him for fear of humiliation and she was not exactly pleased to know that she was heading to the same place he was. After a brief conversation with Edward, she rushed off so fast that she took the shunter's pole with her before it was moved out of the way. Thomas and Rosie ended up front to front at Vicarstown, where they made up for recent events and found that their specials were for Lady Hatt's Valentine's Day surprise.

Behind the Scenes
Rosie has no voice actor as of right now.