Emily (Thomas the Tank Engine)
Emily is a fictional, anthropomorphic steam locomotive from the television series Thomas and Friends. She is the only female member of the "Steam Team", the eight core characters of the series, and was the first female steam engine to be featured in the series. Emily is painted dark green and has large driving wheels and a shiny brass dome, of which she is very proud.
When she first arrived on the Island of Sodor, she took Thomas's coaches Annie and Clarabel by mistake, much to Thomas's dismay. However after she rescued Thomas and Oliver from an accident, Thomas forgave her. The Fat Controller rewarded her with two coaches of her own.
From Season 8 onwards she has been depicted as a rather bossy character, which can make her difficult to work with at times. She is sometimes a 'big sister' figure to smaller engines like Thomas and Percy. It is hinted though that Thomas might have a crush on her. And it's unknown if she would return the feelings.
Emily is unique among the Steam Team in not originating in the Railway Series, the books by the Rev. W. Awdry that form the basis of the television series. She is a relatively recent addition to the television series, arriving in Season 7.
Her Latin American voice actress is Xóchitl Ugarte.
Prototype
Emily is based on a Stirling 4-2-2 of the Great Northern Railway. These engines were used on high-speed express services from York to London in the late 19th and early 20th centuries. The Great Northern Railway used a dark emerald green livery on their locomotives similar to that carried by Emily.