|First Appearance||Constellation Pecola|
|Voiced By||ENG: ???
JP: Yurika Hino
Steamer, also known as Stim in Japanese (スチム, suchimu), is a character from Pecola series.
A cat train mechanic and engineer. Chewy, Pecola, and Rudy are crush with her, which is the cause of tensions and arguments among the three. Her train, The Cactus, is intended eventually to provide a direct link with Cubic City via a tunnel being constructed under the Rookery Mountains . She often stops her work on the engine to play soccer with Pecola and his friends.