Kunchan operates a ramen stall in the Magical Hat universe, often appearing in background or supporting roles. He is depicted as a mysterious Chinese man primarily engaged in selling ramen, regularly using his catchphrase during interactions: "Kunchan's ramen is delicious!" Within the manga adaptation, Kunchan takes on increased significance as an individual capable of deciphering ancient characters, providing functional assistance to other characters through this linguistic skill. His portrayal across all official media—including the original anime, manga, movies, OVAs, and spin-offs—lacks detailed personal history, family connections, or overarching development. Kunchan's narrative purpose remains centered on his ramen stall operations and his manga-specific ability to interpret historical scripts.