Dondon is Abby's pet robot. Dondon is a personal interaction and entertainment robot, outfitted with hovering capabilities allowing it to flutter about for indefinite periods of time. Although it has wings, they are more decorative than functional. Being small and defenseless, Dondon is not a fighter, although there are times when it has shown great courage in order to protect its friends. Its features include a video telephone screen inside its chest cavity, secret recording devices, a camera, and a storage pouch. Its yellow face also glows in the dark. Its personality is very playful and imaginative—it sometimes pretends to be a secret agent for Abby, occasionally disguising itself with her jewelry and hair accessories. Though creative, Dondon is needy of Abby and can be quite bashful with strangers.

In the original Korean version, Dondon has a female personality and is voiced by Bae Ju-Young. In the 4Kids Entertainment English dub, it has a male personality and is voiced by Eric Stuart.