Trixie is the small shunting tractor who works in the train yard,
Every now and then, she loves to try and make jokes and pranks on her fellow engines.
Especially those who (like sparrow) who are very self-centered.
However deep down, she is a good hard working tractor, and loves her friends.

Trixie speaks with a cheeky, teasing tone.
However she does have some sensible moments.
And even a serious 'no joking about' if Ms Farmer Brown (Station Mistress Stacy's sister) is involved!