Ippon-Datara appears as an opponent in the Challenge Quest, Training Battle 1. In this battle, it will alternate between using the Heat Wave and Maragi skills. Flynn, Dzelarhons, and Pyro Jack will automatically repel its Maragi attacks. As it only lasts one turn, the Tetrakarn skill needs to be reserved for turns where Ippon-Datara uses Heat Wave, otherwise the party will be wiped out.
"A monster with one eye and one leg, said to live deep in the mountains of Kumano, Japan. A single footprint measuring 30cm, said to belong to Ippon-datara, was sighted in the mountain's snows."
—Devil Summoner: Soul Hackers 3DS Compendium
Devil Summoner: Raidou Kuzunoha vs The Soulless ArmyEdit
"A monster with one eye and one leg, said to live deep in the mountains of Kumano, Japan. A single footprint measuring 30 centimeters has been sighted in the mountain's snows."
—Devil Summoner Devil Chart
Devil Summoner 2: Raidou Kuzunoha vs. King AbaddonEdit
An Ippon-Datara serving Dr. Victor is disguised as a maid, and gives Raidou Kuzunoha the XIV the doctor's first request. He shows up later to tell Raidou about his master's new branch of Sword Fusion, while complaining about the maid outfit.
"A one-eyed, one-legged monster said to live deep in the mountains of Kumano, Japan. Believed to be the degraded blacksmith god, Ame no Me-Hitotsu no Kami."
—Persona 4 Compendium
The Ippon-Datara is a Persona of the Hermit Arcana. It can be obtained by Fusion or as a result of Shuffle Time in the Marukyu Striptease dungeon.
It is one of the Personas that Margaret requests as part of increasing her Social Link and building the Empress Arcana. As her first request, to reach the 2nd rank in her Social Link, she ask to see an Ippon-Datara that has inherited the skill Sukukaja. It can be obtained by fusing either a level 10 Ghoul with a Yomotsu-Shikome, or by fusing a Sylph with either an Archangel, a Lilim or a Cu Sith.