The Bunny kids first appeared in Oswald's first cartoon "Poor Papa". The Bunny Kids are the massive offspring of Oswald. They roam throughout the Cartoon Wasteland, having nowhere else to go after Oswald was defeated by the Phantom Blot in the Blot Wars. They have massive apetite for Blotlings, and, despite Oswald's distaste, they are very fond of their uncle, Mickey Mouse. Some are found inside Ortensia's house, looking sad and missing her.
If too many as five Bunny Children crowd Mickey, they will carry him and throw Mickey into a nearby Thinner river if the Spin Move isn't performed quick enough. They can be distracted by the TVs in Mickeyjunk Mountain, watching the clip from 'Steamboat Willie'.
Big Bad Pete has missions where he wants you to round up and lock them up, despite being Oswald's kids.
Epic Mickey: Tales of Wasteland
The Bunny Children also appear in the Epic Mickey: Tales of Wasteland (digi)comics. These comics are a prequel to Epic Mickey and take place before the Thinner Disaster. The Bunny Children make a cameo in "Clock Tower Cleaners", and "Oswald the lucky Duck", but have bigger roles in "The Game's Afoot", "One Scary Night" and "There a hole in the Sky". They play a larger role in the comics than in Epic Mickey.
They are quite the troublemakers, but most will gladly help Oswald and Ortensia when asked. They are all called "Oswald Junior" plus their number. For example. "Oswald Junior the 42ND" and there are 420 Bunny Children in total.
The Bunny Children replaced Oswald's adopted sons Floyd and Lloyd from Walter Lantz universe.