Waddle Dee Trains are trains 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. They have a smokestack on top.
They appear in Stage 1 of Old Odyssey and Stage 3 of Royal Road. Waddle Dee Trains do not appear to have a mind of their own. It simply thunders down their 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 Deluxe, a Waddle Dee Train speeds horizontally across Waddle Dee Train Tracks after a warning is issued. It can also travel across the middle of the stage from the background, as it does in Kirby: Triple Deluxe.