Bugbies were a species that seemingly inhabited Planet Bedtime Stories. They were yellow, roughly square in shape, and had big eyes and smiles.
History
The Fourteenth Doctor arrived on Planet Bedtime Stories to tell the bedtime story The Way Back Home, where he recognised one Bugbie sitting in a chair. There was also a trio of Bugbies to his right. (TV: Doctor Who: The Bedtime Story [+]Oliver Jeffers, CBeebies Bedtime Stories (CBeebies, 2023).)