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In the 1985 anime, she is shown to be very beautiful, with long brown or black hair, dark eyes, and wearing a white kimono. In the manga and Hakaba Kitaro however, she takes on a more worn appearance as she's near death. In Hakaba, her hair is more disheveled, her eyes smaller, and she's shown to have a lizard-like tongue. Her appearance in the manga is similar, though she seems to be missing an eye, much like Kitaro himself (albeit the opposite eye).
Not much is known about Iwako, personality-wise. She's shown to be very protective over Kitaro and wants what's best for him. In Hakaba, she appears very hospitable to Mizuki, welcoming him into her home and offering refreshments. She also is shown to be empathetic towards others, relieving a man she found in a hospital of his pain by turning him into a undead creature.
|Members||Kitarō • Medama-Oyaji • Iwako • Yuki-Hime|
|Non-Canon members||Netarō • Jigoku-Dōji|
|Relatives||Kemedama • Mary • Miu • Kai • Miu and Kai's Mother • Mary's Father|
|Items||Chanchanko • Geta • Yōkai Ocarina • Reikai Amulet|
|Main Characters||Kitarō • Medama-Oyaji • Nezumi-Otoko • Mizuki|
|Secondary Characters||Iwako • Hageyama • Mizuki's Mother • Nashita Kaneno • Neko • Trump Omoi • Beatnik • Mononoke • Ichirō Yamada • Masaichi • Shigeru Mizuki • Kinnosuke Ochiba & his Doctor|
|Threats||Yasha • Dracula IV • Fake Kitarō • Mizugami • London Werewolf • Kaneda & Murata • Johnny in the Mist • Dai-Kaijū • Sennin • Underground Mizuki|
|Obake School||Dr. Gamotsu • Caroline • Adobarana|
|The Other World||Jigoku Ticket Taker • The Guide • The Bird That Takes One Step a Millennium • Walking Plant • Nameless Creature That Extends About 10 Kilometers • Living Oasis|
|Sukiyaki Party||Sunakake-Babaa • Konaki-Jijii • Nurikabe • Hitorima • Kishinbō • Miage-Nyūdō • Sodehiki-Kozō • Tatami-Tataki • Tenka • Tsuchi-Korobi • Tsurube-Otoshi|
|Others||Ghost-like Patient • Medium • Bon Arima • Machamitsu Moriwaki • Hibari Ōzora • Gama-Reijō • Mary • Hayato Ikeda • Fly • Hanao Muraoka • Gosaku • Blood Onsen Kappa • Tompo|