Ittan-Momen is a yōkai resembling a long strip of white cloth, typically around 10 meters long though depictions vary. He possesses thin, pointy eyes without discernible pupils and lacks a visible mouth. His arms feature varying numbers of digits across adaptations. His body thins towards the tail and can stretch. Crucially, his head contains a bone, making it the hardest part of his body. Originating from Kagoshima legends, he typically speaks with a Kagoshima dialect. In folklore, he manifests as a flying cloth attacking humans through strangulation or suffocation during evening or nighttime, presenting a dangerous threat despite his non-threatening appearance. Within the *GeGeGe no Kitarō* universe, Ittan-Momen is a benevolent yōkai affiliated with the Kitarō Family and the 47 Yōkai Warriors. He primarily serves as transportation for Kitarō and allies but is also a competent fighter. Described as a "war hawk," he prefers confrontation over negotiation. His abilities include flight and constriction. His first narrative appearance occurred in the 1966 manga story *The Great Yōkai War*, where he died battling the Western Yōkai after being pierced through the heart by the Witch's poison needle. He later reappeared in *Yōkaijū* without explanation for his revival and has since been a recurring character across media. Despite lacking a mouth, Ittan-Momen exhibits human-like traits: he eats chocolate, drinks sweet potato shochu, and bathes to maintain cleanliness. He enjoys admiring pretty women and beautiful kimonos, but dislikes being used as a loincloth and encounters with washers or dryers. He is single and actively seeking companionship. Key weaknesses include vulnerability to scissors, fire, and water. Physical damage like tearing requires sewing for recovery. Specific adaptations show additional fears, such as vampires, and confirm he possesses a heart despite his cloth-like form. His personality includes a combative streak alongside loyalty to the Kitarō Family. Medama-Oyaji has entrusted him with leading troops into battle, reflecting his strategic value beyond mere transportation.