Bunzel Bees live on Jo-Ad and are always after the Bunzel harvest, according to Booster. Known for their characteristic loud buzzing and painful (possibly deadly) stings, Emperor Zurg used a recording of Bunzel Bees to try to dissuade Team Lightyear from investigating his secret base on Jo-Ad.
Bunzel Bees do not actually appear in the show, though they are mentioned in the episode "Root of Evil".