Komonozuku are a group of small creatures that serve as assistants to Dr. Tsukuro. They work together to create various help gears that aid the protagonist Rokuro during his adventures. Their exact nature and ecology remain a mystery, but they are characterized by a love of fun and cheerful activities. They are always eager to help and approach their tasks with a playful and cooperative spirit. Throughout the series, they support Rokuro and his siblings by building tools and gadgets that are used to overcome obstacles. Their primary relationship is with Dr. Tsukuro, whom they follow as their leader, and they also interact positively with Rokuro, Goro, and Nanako. While they do not undergo significant individual development, they consistently appear as reliable helpers who contribute to the group's success. Their notable ability is their skill in crafting and teamwork, allowing them to efficiently produce a wide range of assistive devices. They are often seen dividing the labor among themselves and working in harmony to complete their tasks.