Stanley is a silver tank engine, he became very popular among all the engines.
He was a new member of the SteamTeam since 2008.
Stanley is one of the newest engines on the island and is the boy-nextdoor of the Fat Controller's railway. He is a little bit bigger, a little bit newer and a little bit stronger than Thomas. There's nothing he wouldn't do for another engine. And if he couldn't do it, he'd find someone who could. Stanley is a great friend to everyone. 
Stanley was brought to the Island to help during the construction of Great Waterton, and soon became very popular among the engines of Tidmouth Sheds in Thomas's absence. At first, Thomas was jealous, but he soon found that Stanley is a hardworking, friendly, determined and resourceful engine who will do his utmost to help his friends out of jams and tricky situations, and that's what makes him so likable. Stanley later teamed up with Thomas and the pair of the being the best friends had all sorts of fun. Thomas and Stanley are both good friends, and always will be.
Stanley is kind and friendly, and became very popular amongst the engines during Thomas' absence. He is a loyal hard worker and is inquisitive of his surroundings. He is willing to forgive and his experience makes him a natural leader.
Stanley is a Hudswell Clarke/Kitson No. 5459 "Austin I" hybrid.
- Matt Wilkinson (UK; Series 15 onwards)
- Ben Small (US; S15 onwards)
- One of Stanley's models is currently on display in Canada at Nitrogen Studios.