Petunia is a mogul type engine who pulls high speed passenger trains on the Grand Violet Railway. She brags about her charms and good looks a lot and unfortunately is a stubborn engine, while she tolerates shunting, she often grumbles with freight trains.

Petunia is based of the Walt Disney World Railway #2 the Lilly Belle, but with her sand dome and bell in the opposite positions and given a German style spark arrestor. Some art components drawn by FoxTown2002 were used and like Violet her cab was inspired by the cable cars in San Francisco.