Waddle Dee Train is a train with several cars. Some cars are (presumably empty) passenger cars with roofs, while others carry bundles of firewood. The front car has a Waddle Dee face with slits for eyes and round hands. It has a smokestack on top.
Waddle Dee Train does not appear to have a mind of its own. It simply thunders down its railroad tracks at high speed, driving from the background across the foreground. Kirby will be squished against the screen if he gets hit by one. Waddle Dee Trains can be inhaled using the Hypernova ability.
Some Waddle Dee Trains carry treasure chests. These chests can be acquired after the trains are inhaled.
In Kirby Fighters Z, a Waddle Dee Train speeds horizontally across the screen after a warning is issued.