Bath Buta emerges within the series as a steadfast companion to Charady, frequently appearing during segments centered on joke-telling. Identified as an animal character, Bath Buta specifically embodies a pig with distinctive pink hair. The character's scenes unfold primarily in bath-related settings shared with Charady. Originating from the Kyoto University of Arts' Department of Character Design, student creators brought Bath Buta to life, setting the character apart from the titular Charady, who received a professional designer. Across all media, Bath Buta maintains a consistent supporting role without any elaborated background story, development, or narrative arcs. The character remains exclusive to the original series, absent from spin-offs, films, OVAs, or other expanded media, and stays firmly within Charady's core group without deviation.