Cameo characters

Cameo characters (referring to a group of one or more characters that appear in somewhere in an episode) is a type of character that has no important role in the episode whatsoever. In Dedede Chronicles there is a couple characters that make cameos and have no important role in an episode.

Meta Knight
While not technically a cameo character he made his first appearance in Dedede and the Gang vs Hungry Kirby, however he only appeared in one scene.