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A prototype robot made of spare train parts. Capable of autonomous thought and locomotion, she displays a great amount of enthusiasm for her job. As she's something of a stickler for rules, Ferra won't abide people running in the train, and you better not be throwing trash out of the window! When she gets particularly excited, the whistle attached to her head blows loudly. She is powered by steam, which is emitted from the back of her head. She has a surprising amount of control over the steam even outside of her body, and will sometimes mold it into different shapes as if it were a hairstyle.

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