Wenda and Wendy

Wenda is a living locomotive, her body is a locomotive of the same model as Edward the locomotive, but purple, and Edward is her brother. She can only move on rails, and she is like Thomas the locomotive, she has a gray face, but inside the boiler of her locomotive body, her organs are hidden and covered, her skeleton and arms, but only her skeleton remains of her arms. She never honked her horn because she was afraid that blood would flow from it. She saw many living locomotives, but they all died, and only she works normally and properly.
Wendy is a female train driver in a purple British train driver's uniform, she is Wenda's best friend, she is blind in one eye and her face is half grey, she has one blue eye and the other has faded from blindness, she has much longer black stripes, she is an orphan, she was rejected by her own family and now she lives in the depot with Wenda.