The most common enemy in the Kirby universe, they are the equivalent to Goomba's from the Mario universe.
Waddle Dee's are the most common foes you'll find in Kirby games. They first appeared in Kirby's Dreamland and are most notable for being powerless most of the time. They usually stay out of Kirbys way and don't grant any unique powers when consumed. There are a few alternate versions of Waddle Dees including: Parasol Waddle Dees, Fluff Waddle Dees, and Spear Waddle Dees. Waddle Dees have also appeared as playable characters in a few Kirby games. In Kirby's Epic Yarn Yarn Waddle Dees, created by the sorcerer Yin Yarn, appear, but don't hurt Kirby unless carrying a weapon, such as a spear, or bow and arrow. There were also Balloon Waddle Dees, floating from a bunch of balloons that Kirby can ride on, but the balloons eventually deflate.
Waddle Dee is also portrayed as an ally of Kirby in some of the Kirby games.